On the theory of maximum likelihood estimation of structural relations / by J. Jansen and J.F. BarrettOn the theory of maximum likelihood estimation of structural relations / J. JansenOn the theory of maximum likelihood estimation of structural relations / J. JansenGeneralized linear mixed models and their application in plant breeding research / Johannes JansenUsing Genstat in the analysis of design experiments with observations repeated in time : paper for the Genstat Conference, 7-9 october 1981 / J. Jansen, A. Keen, J.T.N.M. ThissenA Genstat macro for fitting linear logistic regression models to data from experiments with an ordinal response / Hans Jansen and Bertus Keen