@article {Zagorchev1995,
	title = {Pre-Paleogene alpine tectonics in southwestern Bulgaria},
	journal = {Geologica Balcanica},
	volume = {25},
	year = {1995},
	pages = {91{\textendash}112},
	keywords = {JS, TIP},
	author = {Zagorchev, I}
}
@article {Zagorchev2001,
	title = {Introduction to the geology of SW Bulgaria},
	journal = {Geologica Balcanica},
	volume = {31},
	year = {2001},
	pages = {3{\textendash}52},
	keywords = {JS, TIP},
	author = {Zagorchev, I}
}
@article {Tchechmedjieva1986,
	title = {Pal{\'e}o{\'e}cologie des Madr{\'e}poraires du Cr{\'e}tac{\'e} sup{\'e}rieur dans le Srednogori{\'e} de l{\textquoteright}Ouest (Bulgarie occidentale)},
	journal = {Geologica Balcanica},
	volume = {16},
	year = {1986},
	pages = {55{\textendash}81},
	keywords = {RCBS, TIP},
	author = {Tch{\'e}chm{\'e}dji{\'e}va, V}
}
@article {Sapunov1985,
	title = {Stratigraphy of the Callovian and Upper Jurassic rocks in south-western Bulgaria},
	journal = {Geologica Balcanica},
	volume = {15},
	number = {2},
	year = {1985},
	pages = {3{\textendash}61},
	keywords = {JS, TIP},
	author = {Sapunov, I and Tchoumatchenco, P and Dodekova, L and Bakalova, D}
}
@article {Lefeld1986,
	title = {Upper Jurassic-Lowermost Cretaceous sequences in the Inner Carpathians (Poland) and in the Balkanids (Bulgaria) {\textendash} a comparison},
	journal = {Geologica Balcanica},
	volume = {16},
	year = {1986},
	pages = {87{\textendash}97},
	keywords = {JS, TIP},
	author = {Lefeld, Jerzy and Sapunov, I and Tchoumatchenco, P and Bakalova, D and Dodekova, L}
}
@article {Dabowski2002,
	title = {Structure and alpine evolution of Bulgaria},
	journal = {Geologica Balcanica},
	volume = {32},
	year = {2002},
	pages = {9{\textendash}12},
	keywords = {JS, TIP},
	author = {Dabowski, C and Boyanov, I and Khrischev, K H and Nikolov, T and Sapunov, I and Yanev, Y and Zagorchev, I}
}
