TRANSRECTAL ULTRASOUND AND COMPUTED TOMOGRAPHY IN PREOPERATIVE STAGING OF LOWER RECTAL ADENOCARCINOMA Статья Goldman Sven, Arvidsson Håkan, Norming Ulf, Lagerstedt Ulla, Magnusson Inger, Frisell Jan Abdominal Imaging. Springer-Verlag New York. Том 16. 1991. С. 259-263