A randomised trial of radiotherapy versus radiotherapy plus CCNU for incompletely resected low-grade gliomas: a Southwest Oncology Group Study. - Eyre,H.J.; Crowley,J.J.; Townsend,J.J.; Eltringham,J.R.; Morantz,R.A.; Schulmann,S.F.; Quagliana,J.M.; Al-Sarraf,M. (J Neurosurg, 1993)