Authors: Linton, F Schaefer, HP

Citation: F. Linton et Hp. Schaefer, Recommender systems for learning: Building user and expert models through long-term observation of application use, USER MOD US, 10(2-3), 2000, pp. 181-207

Authors: Ignatyev, IS Schaefer, HP

Citation: Is. Ignatyev et Hp. Schaefer, Bromine halides: The neutral molecules BrClFn (n=1-5) and their anions - Structures, energetics, and electron affinities, J AM CHEM S, 121(29), 1999, pp. 6904-6910