1. Experiments with Pietrain/Hampshire crossbred boars.;King;Annls Genet. Sel. anim.,1974
2. Schlote W. , Fender M. and Fewson D. 1974. The Baden-Württemberg cross-breeding experiment in swine-preliminary evaluation. Proc. Working Symp. Breed Evaluation and Crossing Experiments with Farm Animals, Zeist, Netherlands, pp. 343–352.
3. Crossing experiments with pigs. I. Fertility of crossbred sows;Averdunk;Bayer, landw, Jb.,1973
4. The comparative performance of purebred and crossbred boars in commercial pig production