Radiotherapy alone versus combined chemotherapy and radiotherapy in nonresectable non-small cell lung cancer: First analysis of a randomized trial in 353 patients. - Le Chevalier,T.; Arriagda,R.; Quoix,E.; Ruffie,P.; Martin,M.; Tarayre,M.; Lacombe Terrier,M.J.; Douillard,J.Y.; Laplanche,A. (J Natl Cancer Inst, 1991)