1. Arber A (1934) The Gramineae : A Study of Cereal Bamboo and Grasses. Cambridge University Press, London, pp. 270-273.
2. Dormancy and flowering in Anemone coronaria L. as affected by photoperiod and temperature;Ben-Hod;Ann Bot,1988
3. Brewster JL (1990) Physiology of crop growth and bulbing. In: Rabinowitch HD, Brewster JL (eds) Onions and Allied Crops, vol. 1. CRC Press, Boca Raton, FL, pp 53-88. ISBN 0-8493-6300-0
4. De Klerk GJ, Gerrits MM (1996) Development of dormancy in tissue-cultured lily bulblets and apple shoo ts . In: Lang GA (ed.) Plant Dormancy: Physiology, Biochemistry and Molecular Biology. CAB International, Oxon, pp 115-131. ISBN 0-85198-978-0
5. Experimental trials on the reaction of hybrid ranunculus to photoperiod;Farina;Ann Ist Sper Floric,1985