@ARTICLE {WAIREGI:2012,
title = {Norms for multivariate diagnosis of nutrient imbalance in Arabica and Robusta coffe in the East African highlands},
author = {Wairegi, L. W. I. and Van Asten, P. },
journal = {Experimental Agriculture},
year = {2012},
volume = {48},
number = {3},
pages = {448--460},
issn = {0014-4797},
doi = {10.1017/s0014479712000142},
}