Lapteva,A.M. (1967)
Palynological basis for the stratigraphic subdivision of the Jurassic in the Northwestern Confines of the Donets Basn. [ Palinolohichne Obhruntuvannya Stratyhrafichnoho Rozchlenuvannya Yurs'Kykh vidkladiv Pivnichno-Zakhindoi Obrain Donbasu. ] Dopovidi Akademii Nauk Ukrainskoi RRS,Seriya B. Geologichi Khimichi ta Biologichni Nauki
Vol. 1967 # 2 P. 19- 26