1. Lichen planus and lichenoid eruptions;Samman,1979
2. Lichen planus;Arndt,1979
3. Lichen planus: Clinical study with statistical methods;Hellgren;Indian J. Derm.,1965
4. The variation and course of lichen planus;Altman;Arch. Derm.,1961
5. Lichen planus: analysis of 200 cases;Samman;Trans. St. Johns Hosp. Dermatol. Soc.,1961