@article{Schaeffer1991,
author = {Schaeffer, N.C. and Seltzer, J.A. and Klawitter, K.},
title= {Estimating Nonresponse and Response Bias: Resident and Nonresident Parents' Reports about Child Support},
year = {1991},
doi = {10.1177/0049124191020001002},
journal = {Sociological Methods & Research},
volume = {20},
number = {1},
pages = {30--59},
}