TY  - JOUR
A1  - van Tilburg, T.G.
T1  - Losing and gaining in old age: changes in personal network size and social support in a four-year long study
Y1  - 1998
JF  - Journals of Gerontology
VL  - Series B, 53
IS  - 6
SP  - 313
EP  - -323

ER  -