1. Blood groups and breed differences in pigs, A comparative immunogenetic and biochemical study;Agergaard;Annual Report of the Sterility Research Institute, Royal Veterinary and Agricultural College, Copenhagen,1977
2. Linear sequence of the autosomal loci PHI. H and 6-PGD in pigs;Andresen;Animal Blood Groups and Biochemical Generics,1971
3. Evidence indicating the sequence Phi, Hal and H of three closely linked loci in pigs;Andresen;Nordisk Veterinär-Medicin,1979
4. Close linkage established between the HAL locus for halothane sensitivity and the PHI (phosphohexose isomrrase) locus in pigs of the Danish Landrace breed;Andresen;Nordisk Veterinär-Medicin,1977