@article {20573,
	title = {Biological nitrogen fixation to maximize productivity of intercropped legumes and non-legumes: ten years of field experimentations in semi-arid desert of Egypt},
	journal = {Archives of Agronomy and Soil Science},
	volume = {47},
	year = {2001},
	pages = {103-131},
	author = {N. A. Hegazi and M. Fayez}
}
