Richard D. Pezner, John O. Archambeau, James A. Lipsett, William A. Kokal, William Thayer, L. Robert^Hill,
Tube feeding enteral nutritional support in patients receiving radiation therapy for advanced head and neck cancer International Journal of Radiation Oncology Biology Physics. ,vol. 13, pp. 935- 939 ,(1987) ,
10.1016/0360-3016(87)90110-6