@article{Schaeffer1992,
author = {Schaeffer, N.C. and Thomson, E.},
title= {The Discovery of Grounded Uncertainty: Developing Standardized Questions about Strength of Fertility Motivation},
year = {1992},
doi = {10.2307/270992},
journal = {Sociological Methodology},
volume = {22},
pages = {37--82},
}