Reference
A. I. Filov (1935): The biology of flowering and fertilisation in cucurbitaceous cultivated plants. [Ru; 7 figs., 17 tabs., refs. in footnotes. Date: 26.XII.1935]. – Trudy Prikl. Bot. Gen. Selek., Ser. A: Sotsial. Rastenievod. (Leningrad, Moscow) – 16: 103 - 119.