G. Zimmer

发表

G. Wentink, E. T. ter Laak, G. Zimmer, 1992, The Veterinary quarterly.

W. Wouda, G. Zimmer, F. Sluijter, 1990, Veterinary Record.

T. Kimman, P. D. de Leeuw, P. Straver, 1986, American journal of veterinary research.