1. Rare forms of urticaria;Nettleship;Brit. M. J.,1869
2. Heparin.;Jorpes,1939
3. Significance of heparin and its relationship to urti-caria pigmentosa;Caccialanya;Hautartzt,1951
4. Urticaria pigmentosa hemorrhagic;Asboe-Hansen;Acta dermat.-venereol.,1950
5. Urticaria pigmentosa mast cells;Drennan;J. Path.&Bact.,1951