Das, K., N. K. Das, V. S. Rathore, S. Kundu, S. Choudhury, R. C. Gharami, and P. K. Datta. “Keratoacanthoma Centrifugum Marginatum: Unresponsive to Oral Retinoid and Successfully Treated With Wide Local Excision”. Dermatology Reports, vol. 2, no. 1, Jan. 2010, p. e1, doi:10.4081/dr.2010.e1.