1. Garretsen, Frida & M. Keuls, 1973. Analysis of genetic variation in an incomplete diallel cross. Proc. Eucarpia Conf. Biometrics (Hannover, 1973): 24–35.
2. Garretsen, Frida & M. Keuls, 1977. General and specific reciprocal effects in complete and incomplete diallel crosses. Eucarpia Conf. Biometrics (Gödöllö, 1975) (in press).
3. Hawthorn, L. R. & R. Wellington, 1930. Geneva, a greenhouse cucumber that develops fruit without pollination. Bull. N. Y. St. agric. Exp. Stn 580: 11 pp.
4. Juldasheva, L. M., 1973. Inheritance of the tendency towards parthenocarpy in cucumbers (Russian). Byull. vsesoyuznogo ordena Lenina Inst. Rastenievodstva Imeni N.I. Vavilova 32: 58–59.
5. Kubicki, B., 1969. Investigations on sex expression in cucumber (Cucumis sativus L.). Genet. polon. 10: 5–143.