Silva, J., Pinto, R., Carvalho, T., Botelho, F., et al. (2011). Intraprostatic botulinum toxin type A administration: Evaluation of the effects on sexual function. BJU International, 107(12), 1950 - 1954.

Silva, J., Pinto, R., Carvalho, T., Botelho, F., et al. (2009). Intraprostatic Botulinum Toxin Type A injection in patients with benign prostatic enlargement: Duration of the effect of a single treatment. BMC Urology, 9(1).