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Pijpers A, Schoevers EJ, van Gogh H, van Leengoed LA, Visser IJ, van Miert AS, Verheijden JH.Pijpers A, et al. Among authors: verheijden jh.J Anim Sci. 1991 Jul;69(7):2947-54. doi: 10.2527/1991.6972947x.J Anim Sci. 1991.PMID: 1885404
Pijpers A, Schoevers EJ, Haagsma N, Verheijden JH.Pijpers A, et al. Among authors: verheijden jh.J Anim Sci. 1991 Nov;69(11):4512-22. doi: 10.2527/1991.69114512x.J Anim Sci. 1991.PMID: 1752826