UMEZAWA, Toshio. “Analytic Functions Convex in One Direction”. Journal of the Mathematical Society of Japan, vol. 4, no. 2, 1952, https://doi.org/10.2969/jmsj/00420194.
UMEZAWA, T. (1952). Analytic functions convex in one direction. Journal of the Mathematical Society of Japan, 4(2). https://doi.org/10.2969/jmsj/00420194
UMEZAWA T. Analytic functions convex in one direction. Journal of the Mathematical Society of Japan. 1952;4(2).