Problems of Cryobiology and Cryomedicine, Editorial Board. 2018. “In Memoriam: Sajio Sumida (July 06th, 1933 – November 01st, 2017)”. Problems of Cryobiology and Cryomedicine 28 (1):98-99. https://cryo.org.ua/journal/index.php/probl-cryobiol-cryomed/article/view/1390.