Vito Lorusso, Ilaria Marech, Marianna Giampaglia, Andrea Tinelli, and Vincenzo Emanuele Chiuri. “Present and Emerging Targeted Therapy for Metastatic Breast Cancer”. Journal of Cancer Research Updates, vol. 1, no. 1, Jan. 2012, pp.  94-101, doi:10.6000/1929-2279.2012.01.01.14.