@misc{misc4efce77c,
title   = {Prognostic factors in primary retroperitoneal soft-tissue sarcomas},
author = {Bevilacqua, Ruy Geraldo and Rogatko, A. and Hajdu, S. I. and Brennan, M. F.},
year = {1991},
booktitle   = {Annual Cancer Symposium of the Society of Surgical Oncology}
}