Effects of steroidal aromatase inhibitors on sensitive and resistant breast cancer cells: Aromatase inhibition and autophagy - Amaral, C.; Varela, C.; Azevedo, M.; da Silva, E. T.; Roleira, F.M.F.; Chen, S.; Correia-da-Silva, G.; Teixeira, N. (Journal of Steroid Biochemistry and Molecular Biology, 2013)