Anagnostopoulos, G. Baltas, D. Pantelis, E. Papagiannis, P. Sakelliou, L., The effect of patient inhomogeneities in oesophageal 192Ir HDR brachytherapy: A Monte Carlo and analytical dosimetry study, Physics in Medicine and Biology, (49), 2675-2685, 2004, 0031-9155, 1361-6560