Nakamura, I.; Takahashi, H.; Ohta, S.; Moriizumi, T.; Hanashiro, Y.; Sato, Y.-I.; Mill, M. Origin of Prunus X Yedoenins ’Somei-yoshino’ Based on Sequence Analysis of PolA1 Gene. Adv. Hort. Sci. 2015, 29, 17-23.