Founded 1934 by Prof. Dr Stefan Bončev
A Geo-Sciences Journal of the Geological Institute “Strashimir Dimitrov”, Bulgarian Academy of Sciences
Official Journal of the Carpathian-Balkan Geological Association

Ekaterina Trifonova

Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Daria Ivanova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Foraminiferal assemblages and zonations across the Lower - Middle Triassic boundary in Bulgaria

Volume 31 3-4 December 2001

Ivan Zagorchev
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Daria Ivanova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Kristalina Stoykova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Emil Goranov
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Petko Pemov
"Sofgeoprouchvane" Ltd.

New data on the Middle and Upper Jurassic stratigraphy in the Konyava Mountain, SW Bulgaria

Volume 30 1-2 June 2000

Ivan Zagorchev
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Kiril Budurov
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Emil Goranov
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Petko Pemov
"Sofgeoprouchvane" Ltd., Sofia

The Triassic in Southwest Bulgaria. New data on the Upper Triassic in the Konyava Mountain

Volume 29 3-4 December 1999

Samouil Benatov
Bl. 36B, Lyulyakova gradina Str., 1113 Sofia
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Kiril Budurov
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Lyudmila Petrunova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Parallel biostratigraphy on micro-and megafauna and new data about the age of the Babino Formation (Middle Triassic) in the Iskur Gorge, Western Stara Planina

Volume 29 3-4 December 1999

Ivan Zagorchev
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Kiril Budurov
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Kristalina Stoykova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Newly recognized Upper Triassic and Jurassic formations in Southwest Bulgaria: palaeogeographic and palaeogeodynamic implications

Volume 28 1-2 August 1998

Kiril Budurov
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Ivan Zagorchev
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Lyudmila Petrunova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

The Triassic in Southwest Bulgaria. Contribution to the stratigraphy of the Iskur Carbonate Group in the Vlahina Mountain

Volume 27 1-2 August 1997

Kiril Budurov
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Conodont and foraminiferal successions from the Triasic of Bulgaria

Volume 25 1 February 1995

Kiril Budurov
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Ivan Zagorchev
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

The Triassic in Southwest Bulgaria. Stratigraphic correlation of key sections in the Iskar Carbonate Group

Volume 25 1 February 1995

Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Daria Ivanova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

On the presence of Marginulina prima Range-Zone (Foraminifera) from the Lower Jurassic of Bulgaria

Volume 25 1 February 1995

Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia

Taxonomy of Bulgarian Triassic foraminifera. III. Families Spiroloculiniidae to Oberhausereliidae

Volume 24 2 April 1994

Marta Pérez-Arlucea
Faculdado de Geologia, Universidad Complutense, 28040, Madrid
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Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Stratigraphy of the Middle Triassic in a part of the Iberian Ranges (Spain) based on foraminifera data

Volume 23 5 October 1993

Kiril Budurov
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Ivan Zagorchev
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

The Triassic in Southwest Bulgaria. Upper Triassic red beds (Moesian Group) in the Golo-bârdo unit

Volume 23 5 October 1993

Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Taxonomy of Bulgarian Triassic foraminifera. II. Families Endothyriidae to Ophthalmidiidae

Volume 23 2 April 1993

Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Taxonomy of Bulgarian Triassic foraminifera. I. Familes Psammosphaeridae to Nodosinellidae

Volume 22 1 February 1992

Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Ivan Zagorchev
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Studia breviora: Late Triassic stratigraphy and paleogeography in Golo-bârdo Unit, SW Bulgaria

Volume 20 6 December 1990

Ivan Zagorchev
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Atanasios Mavridis
lnstitllle for Geology and Mineral Exploration ( lGME), 11527 Athens
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Kiril Budurov
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Lyubov B. Tikhomirova
Vsesoyuzniy Geologicheskiy lnstitut ( VSEGEI), 199026 Leningrad
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Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Vana Scourtsis-Coroneou
lnstitllle for Geology and Mineral Exploration ( lGME), 11527 Athens
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Constantinos Manacos
lnstitllle for Geology and Mineral Exploration ( lGME), 11527 Athens

New stratigraphic data on Lower Drimos Limestones (Upper Triassic) from the section of Karpenission, Pindos-Olonos Zone (Eurytania, Greece)

Volume 19 5 October 1989

Ekaterina Trifonova
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Georgi Čatalov
Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia

Foraminifera data on the stratigraphy of the Strandža facial type of Triassic (Strandža Mt., SE Bulgaria)

Volume 18 5 October 1988

Ekaterina Trifonova

Basic moments in the development of the foraminifers during the Triassic in Bulgaria

Volume 17 2 April 1987

Ekaterina Trifonova
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Ivan Boyanov

Late Permian foraminifers from rock fragments in the Mesozoic phyllitoid formation of the East Rhodopes, Bulgaria

Volume 16 1 February 1986

Ekaterina Trifonova

Upper Permian foraminifers from South-eastern Lakonia (Peloponessus, Greece)

Volume 15 4 August 1985

Ekaterina Trifonova

Correlation of Triassic foraminifers from Bulgaria and some localities in Europe Caucasus and Turkey

Volume 13 6 December 1983

Ekaterina Trifonova
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Aneta Vaptsarova

Palaeoecology of Late Anisian Foraminifera in part of North Bulgaria

Volume 12 4 December 1982

Ekaterina Trifonova

Foramifera Zones and Subzones of the Triassic in Bulgaria. II. Ladinian and Carnian

Volume 8 4 December 1978

Ekaterina Trifonova

The Foramifera Zones and Subzones of the Triassic in Bulgaria. I. Scythian and Anisian

Volume 8 3 September 1978

Ivan Boyanov
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Ekaterina Trifonova

New Data on the Age of the Phyllitoid Complex from the Eastern Rhodopes

Volume 8 1 March 1978

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