@article{Glass1997,
author = {Glass, T.A. and Mendes de Leon, C.F. and Seeman, T.E. and Berkman, L.F. },
title= {Beyond single indicators of social networks: a LISREL analysis of social ties among the elderly},
year = {1997},
doi = {10.1016/S0277-9536(96)00270-5},
journal = {Soc Sci Med },
volume = {44},
number = {10},
pages = {1503−1517},
}