Ciudad, A.; Álvarez, E.; Bousoño, M.; Olivares, J. M.; Gómez, J. C. Safety and Tolerability of Olanzapine Versus Risperidone: A One-Year Randomized Study in Outpatients With Schizophrenia With Prominent Negative Symptoms. Actas Esp Psiquiatr 2007, 35, 105-114.