Bernardes Filho, F., dos Santos, B. P. L., Gonçalves, M. S. P., de Carvalho, S. M. and dos Santos, V. V. (2015) “CYANOSIS AND PURPURA IN FINGERS − FUNDAMENTALS OF THE DIFFERENTIAL DIAGNOSIS, APROPOS OF A CASE”, Journal of the Portuguese Society of Dermatology and Venereology, 72(4), pp. 569-572. doi: 10.29021/spdv.72.4.330.