Remote investigation of ancient and mediaeval settlements in the area of the Isperih municipality.

von Petrova, P.
Veröffentlicht in Sboryanovo. Studies and prospects. Proceedings of the conference in Isperih, 8 December 1988
Umfang/Format: 40-49, Abb.

Remote prospecting of tumular necropolises in northeastern Thrace. (Bulg.m.engl.Res.) -.

von Petrova, P.
Veröffentlicht in Acta, 4.1990
1990.
Umfang/Format: 179-181.

The rock sanctuary near the village of Vesselinovo, possible decoding and symbolism.

von Koleva, V.
Veröffentlicht in Actes de la 5ème Conférence Annuelle de la SEAC (Société Européenne pour l'Astronomie dans la Culture), Gdańsk 1997.
Warszawa/Gdańsk : Instytut Archeologii Uniwersytetu Warszawskiego, 1999.
Umfang/Format: 175-183 : Abb.