D. Cunningham, J. Zalcberg, J. Maroun, R. James, S. Clarke, T.S. Maughan, M. Vincent, J. Schulz, M. González Barón, T. Facchini,
Efficacy, tolerability and management of raltitrexed (Tomudex) monotherapy in patients with advanced colorectal cancer. a review of phase II/III trials. European Journal of Cancer. ,vol. 38, pp. 478- 486 ,(2002) ,
10.1016/S0959-8049(01)00413-0