1. Arima HK, Rodriguez-Amaya DB (1988) Carotenoid composition and vitamin A value of commercial Brazilian squashes and pumpkins. J Micronutr Anal 4:177–191
2. Bauernfeind JC (1972) Carotenoid vitamin A precursors and analogs in foods and feeds. J Agric Food Chem 20:456–473
3. Bazzaz FA, Carlson RW, Harper JL (1979) Contribution to reproductive effort by photosynthesis of flowers and fruits. Nature 279:554–555
4. Bushnell JW (1922) Isolation of uniform types of Hubbard squash by inbreeding. Proc Am Soc Hortic Sci 19:139–144
5. Culpepper CW, Moon HH (1945) Differences in the composition of the fruits of Cucurbita varieties at different ages in relation to culinary use. J Agrie Res 71:111–136