Oncogenic K-Ras Signals through Epidermal Growth Factor Receptor and Wild-Type H-Ras to Promote Radiation Survival in Pancreatic and Colorectal Carcinoma Cells oleh Keith A. Cengel, K. Rahn Voong, Sanjay Chandrasekaran, Laurence Maggiorella, Thomas B. Brunner, Eric Stanbridge, Gary D. Kao, W. Gillies McKenna, Eric J. Bernhard