@book{Volz2012,
author = {Volz, E. and Wejnert, C. and Cameron, C. and Spiller, M. and Barash, V. and Degani, I. and Heckathorn, D.D. },
title= {Respondent-driven sampling analysis tool (RDSAT) Version 7.1. Ithaca},
year = {2012},
address = {NY},
publisher = {Cornell University},
}