Stinco G, Frattasio A, Forcione M, Quinkenstein E, Finato N, Patrone P. The appearance of inflammatory papules in the skin surrounding areas treated with imiquimod cream for basal cell carcinoma. Br J Dermatol. 2008 Feb;158(2):408–9. doi: 10.1111/j.1365-2133.2007.08301.x. PMID: 18028501.