Biblio

Christoskov, Ludmil. "Earthquakes – Hazard and Contrameasures." 62 (2000).

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Bonchev, E., V.N. Sholpo, N.V. Shebalin, S. Rizhikova, V. Kostadinov, G.J. Reisner, V. Kostadinov, J. Karagyuleva, I. Bune, and Ludmil Christoskov. "A Method for Compilation of Seismic Zoning Prognostic Maps for the Territory of Bulgaria." Geologica Balcanica 12, no. 2 (2000): 3=48.

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Grigorova, E., D. Sokerova, Ludmil Christoskov, and Sn. Rizhikova. Catalogue of the Earthquakes in the Territory of Bulgaria for the Period 1900-1977. Sofia: Bulgarian Acad¬emy of Sciences, Archives of the Geophysical Institute of BAS, 1979, 1979.

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Christoskov, Ludmil, D. Sokerova, and Sn. Rizhikova. New Catalogue of the Earthquakes in the Territory of Bulgaria and Adjacent Region for the Period V century BC to XIX century. Sofia: Bulgarian Academy of Sciences, Archives of the Geophysical Institute of BAS, 1979, 1979.

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