@article{Gurland1988,
author = {Gurland, B.J. and Wilder, D.E. and Berkman, C.},
title= {Depression and disability in the elderly: Reciprocal relations and changes with age},
year = {1988},
doi = {10.1002/gps.930030304},
journal = {International Journal of Geriatric Psychiatry},
volume = {3},
number = {3},
pages = {163--179},
}