1. A second example of the weak antigen A4 occurring in the offspring of group O parents;Beckers;Vox Sang.,1955
2. On the genetics of secretor and Lewis characters: a family study. Proc. Vth Int. Cong;Ceppellini;Blood Transfusion,1955
3. Group A blood weaker in reaction than A3;Dunsford;Bulletin of the Central Laboratory, Netherlands Red Cross Blood Transfusion Service,1952
4. An A4 cDue/cde blood in an English family;Dunsford;Ann. Eugen., Lond.,1952
5. Occurrence of an exceedingly weak “A” blood group property in a family;Estola;Ann. Med. exp. Biol. Fenn.,1952