1. 2. Enslin, P. R. (1954) Bitter principles of the Cucurbitaceae. I. Observation on the chemistry of cucurbitacin A. J. Sci. Food Agric., 5, 410-416.
2. 3. Enslin, P. R., Rehm, S. & Rivett, D. E. A. (1957) Bitter principles of the Cucurbitaceae. VI. The isolation and characterization of six new crystalline bitter principles. J. Sci. Food Agric., 8, 673-678.
3. 4. Gorski, P. M. et al. (1986) Rapid TLC and HPLC quantification of cucurbitacin C in cucumber cotyledons. HortScience, 21, 1034-1036.
4. 5. Higashio, H. (2002) Value adding technologies to commodities in vegetable production. Norinsuisan gijutsu kenkyu Journal (Res. J. Food & Agric.), 25(9), 18-22 [In Japanese].
5. 6. Kano, Y., Yamabe, M. & Ishimoto, K. (1997) The occurrence of bitter cucumber (Cucumis sativus L. cv. Kagafutokyuri) in relation to pruning, fruit size, plant age, leaf nitrogen content, and rootstock. Engei gakkai zasshi (J. Jpn. Soc. Hort. Sci.), 66, 321-329 [In Japanese with English summary].