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Nectar as food for birds: the physiological consequences of drinking dilute sugar solutions[J] . S. W. Nicolson,P. A. Fleming.Plant Systematics and Evolution . 2003 (1-4)
[9]
Floral visitors and nectar secretion of the Japanese camellia, camellia japonica L[J] . Jeong Rae Rho,Jae Chun Choe.Korean Journal of Biological Sciences . 2003 (2)
[10]
Pollination by passerine birds: why are the nectars so dilute?[J] . Susan W. Nicolson.Comparative Biochemistry and Physiology, Part B . 2002 (4)