S. Fonseka, B. Subhani, and P. V. R. Kumarasiri, “Effectiveness of modified Whitfield’s ointment with oral griseofulvin in the treatment of dermatophytosis poorly responsive to standard antifungal therapy: a randomized, double blind, within patient placebo control”, Int J Clin Trials, vol. 6, no. 4, pp. 206–214, Oct. 2019.