A. Kalogeraki, D. Tamiolakis, T. Tsagatakis, K. Geronatsiou, V. Haniotis, and M. Kafoussi, “Eccrine Porocarcinoma: Cytologic Diagnosis by Fine Needle Aspiration Biopsy (FNAB)”, Acta Med Port, vol. 26, no. 4, pp. 467–470, Aug. 2013.