1. Graded continuity, all or none-studies of the human immune response;Friedmann;Clin Exp Dermatol,1991
2. Contact hypersensitivity;Friedmann;Current Opinion in Immunology,1989
3. Quantification of contact hypersensitivity in man. Maibach. Lowe (eds);Friedmann;Models in dermtology,1985
4. Quantitative relationships between sensitizing dose of DNCB and reactivity in normal subjects;Friedmann;Clin Exp Immunol,1983