@ARTICLE {SANGINGA: 1994,
title = {Field validation of intraspecific variation in phosphorus use efficiency and nitrogen fixation by provenances of Gliricidia sepium grown in low P soils},
author = {Sanginga, N. and Danso, S. K. A. * and Zapata, F. and Bowen, G. D. },
journal = {Applied Soil Ecology},
year = {1994},
volume = {1},
pages = {127--138},
issn = {0929-1393},
}