Ranguelov, B., Riznikova, S., Toteva, T. The earthquake (M 7.8) source zone-south-west Bulgaria. Sofia: Prof. M.Drinov, 2001 280 p.: ill, 954-430-744-3.
Ranguelov, B., Riznikova, S., Toteva, T. The earthquake (M 7.8) source zone-south-west Bulgaria. Sofia: Prof. M.Drinov, 2001 280 p.: ill, 954-430-744-3.
Ranguelov, B., Riznikova, S., Toteva, T. (2001) The earthquake (M 7.8) source zone-south-west Bulgaria, Sofia: Prof. M.Drinov 280 p.: ill, 954-430-744-3.
Ranguelov, B., Riznikova, S., & Toteva, T. (2001). The earthquake (M 7.8) source zone-south-west Bulgaria. Full catalogue and macroseismik maps. Sofia: Prof. M.Drinov, 280 p.: ill.
Ranguelov B, Riznikova S, Toteva T. The earthquake (M 7.8) source zone-south-west Bulgaria: Full catalogue and macroseismik maps. Sofia: Prof. M.Drinov; 2001. p. 280 p.: ill. ISBN: 954-430-744-3.