Breast cancer in elderly women: a retrospective analysis of combined treatment with tamoxifen and once-weekly irradiation. - Maher,M.; Campana,F.; Mosseri,V.; Dreyfus,H.; Vilcoq,J.R.; Gautier,C.; Asselain,B.; Fourquet,A. (Int J Radiat Oncol Biol Phys, 1995)