1. Close linkage between the locus for phosphohexose isomerase (PHI) and the H blood group locus in pigs;Andresen;Animal Blood Groups and Biochemical Genetics,1970a
2. Linkage between the H and 6-PGD loci in pigs;Andresen;Acta Veterinaria Scandi-navica,1970b
3. Linear sequence of the autosomal loci PHI, H and 6-PGD in pigs;Andresen;Animal Blood Groups and Biochemical Genetics,1971
4. A circumstance in which close linkage may be deduced from population studies by simulating multiple allelism;Andresen;Nordisk Veterinaer Medicin,1978
5. Evidence indicating the sequence Phi, Hal, H of the three closely linked loci in pigs;Andresen;Nordisk Veterinaer Medicin,1979a