Verzhuk, V. G., Tikhonova, N. G., & Zhestkov, A. S. (2005). Viability of pollen of fruit crops after low temperature storage and cryopreservation. Problems of Cryobiology and Cryomedicine, 15(3), 302–305. Retrieved from https://journal.cryo.org.ua/index.php/probl-cryobiol-cryomed/article/view/1114