L. Heyman

发表

J. Gnarpe, H. Gnarpe, G. Falck, 1994, Scandinavian journal of infectious diseases.

J. Gnarpe, H. Gnarpe, G. Falck, 1995, Scandinavian journal of infectious diseases.

D. Senne, R. Slemons, M. Shieldcastle, 1991, Avian diseases.