* 1909 - Alexander A. Maximow The lymphocyte as a stem cell, common to different blood elements in embryonic development and during the post-fetal life of mammals. Lecture with a demonstration, held at a special meeting of the Berlin Hematological Society on 1 June 1909 (tradotto dal tedesco). Folia Haematologica 8.1909, 125-134 (l'originale in tedesco).