TY  - JOUR
A1  - Bernard, H.R.
A1  - Johnsen, E.C.
A1  - Killworth, P.D.
A1  - Robinson, S.
T1  - Estimating the size of an average personal network and of an event subpopulation: Some empirical results
Y1  - 1991
DO  - 10.1016/0049-089X(91)90012-R
VL  - 20
IS  - 2

ER  -