@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}, }