TY  - JOUR
A1  - Heckathorn, D.D.
T1  - Respondent-driven sampling: A new approach to the study of hidden populations
Y1  - 1997
DO  - 10.1525/sp.1997.44.2.03x0221m
JF  - Social Problems
VL  - 44
IS  - 2
SP  - 174
EP  - -199

ER  -