1. Blood Group with Characteristic Phenotypical Aspects;Andresen P. H.;Acta pathologica,1947
2. Blood Group System L. A New Blood Group L2. A Case of Epitasy Within the Blood Groups;Andresen P. H.;Ibidem,1948
3. Andresen P. H.(1949) Personal communication.
4. An Incomplete Agglutinin Related to the Lu (Lewis System);Andresen P. H.;Acta pathologica,1949
5. Studies of Agglutination and Inhibition in Two Lewis Antibodies;Brendemoen O. J.;The Journal of Laboratory and Clinical Medicine,1949