@article {24186,
	title = {Phenology, pigment content and diurnal change of proline in green and senescing leaves of three Zygophyllum species.},
	journal = {Flora},
	volume = {184},
	year = {1990},
	pages = {423- 436},
	author = {G.M. Fahmy and A.K. Hegazy and Hassan, T.H.}
}
