1. THE INCIDENCE OF FREEMARTINISM IN SHEEP
2. Cytogenetic and reproductive studies of bulls born co-twin with freemartins
3. H. Fritz-Hirni, M.L. Glowatzki-Mullis, and C. Gaillard , 1996 : Genotyping Microsatellites in Bovine Twins: a Study of Chimerism . Abstr. XXVth Inter. Conf. Anim. Genet., Tours, pp. 30 .
4. H. Fritz-Hirni, J. Muntwyler, and M.L. Glowatzki-Mullis , 2000 : Parentage testing with microsatellites in cattle: pitfall twins . Abstr. XXVIIth Int. Conf. Anim. Genet., University of Minnesota, pp. 94 .
5. Generation of chromosome fragment specific bovine DNA sequences by microdissection and DOP-PCR