Shimkus, K. M.; Zigunov, A. S.; Trimonis, E. S. (1980): Petrograficheskaya kharakteristika porod iz skv. 380A i 381 The petrographic characteristics of rocks from well 380A and 381. Izd. Nauka, Moscow, USSR, In: Neprochnov, Yu. P. (editor), Geologicheskaya istoriya Chernogo morya po rezul'tatam glubokovodnogo bureniya The geologic history of the Black Sea from the results of deep-sea drilling, 33-37, georefid:1982-002971