1. Rare forms of urticaria;Nettleship;BMJ,1869
2. An anomalous mottled rash, accompanied by pruritus, factitious urticaria and pigmentation, “urticaria pigmentosa”?;Sangster;Trans Clin Soc London,1878
3. Beitraege zur Anatomie und Pathogenese der Urticaria simplex and pigmentosa;Unna;Monatsschrift Praktische Dermatologie,1887
4. Dermographisme et mastocytose;Sézary;Bulletin Societé Francoise Dermatologie et Syphilligologie,1936
5. Urticaria pigmentosa: a report of a case with autopsy;Ellis;AMA Arch Pathol,1949