A palliative accelerated irradiation regimen for advanced non-small-cell lung cancer vs. Conventionally fractionated 60 Gy: results of a randomized equivalence study. - Nestle,U.; Nieder,C.; Walter,K.; Abel,U.; Ukena,D.; Sybrecht,G.W.; Schnabel,K. (Int J Radiat Oncol Biol Phys, 2000)