Problems of Cryobiology and Cryomedicine, E. B. “In Memoriam: Sajio Sumida (July 06th, 1933 – November 01st, 2017)”. Problems of Cryobiology and Cryomedicine, vol. 28, no. 1, Mar. 2018, pp. 98-99, https://cryo.org.ua/journal/index.php/probl-cryobiol-cryomed/article/view/1390.