@INBOOK {VERSTEEG:1991,
title = {Trial design and analysis for on-farm adaptive research: a 1988 maize trial in the Mono Province of Benin},
author = {Versteeg, M. and Huijsman, A. },
year = {1991},
type = {On-farm research in theory and practice, edited by H.J.W. Mutsaers and P. Walker},
pages = {111--121},
publisher = {International Institute of Tropical Agriculture (IITA)},
address = {Ibadan, Nigeria},
}