Comparative studies of the effectiveness of usage of 2D graphene structures of various prehistory in biopreparations - A. P. Voznjakovskij; I. V. Shugalej; I. I. Novikova; I. V. Bojkova; Ju. Neverovskaja; A. A. Voznjakovskij; A. D. Lapshina (Tooling materials science, 2019)