They are "Meiji Restoration in Memories, Notes of a Russian Revolutionist" (Iwanami bunko) and "Meiji Restoration seen by an Exiled Russian" (Kodansha Academic Paperback).
『回想の明治維新　一ロシア人革命家の手記』（岩波文庫）と『亡命ロシア人の見た明治維新』（講談社学術文庫）。