^ a b c YOUICHI SATO, TOSHIKATSU SHINKA, ASHRAF A. EWIS, AIKO YAMAUCHI, TERUAKI IWAMOTO, YUTAKA NAKAHORI Overview of genetic variation in the Y chromosome of modern Japanese males. doi : 10.1537/ase.140709 ^ a b c Atsushi Tajima, Masanori Hayami, Katsushi Tokunaga, Takeo Juji, Masafumi Matsuo, Sangk...