 In this list of 170 names, Oster is the only children's writer who “made a contribution to the development of post-totalitarian Russian literature.” At the same time, the writer never belonged to either the socialist realist, the dissident, or the avant-garde literary camp.According to the observations of critics, his aesthetics are distinguished by "stylistic eclecticism, subtext, citation, play of signs, irony, parody and stylization.