@article{Pohlmeier1995,
author = {Pohlmeier, W.  and Ulrich, V. },
title= {An econometric model of the two-part decision making process in the demand for health care},
year = {1995},
doi = {10.2307/146123},
journal = {Journal of Human Resources },
volume = {30},
number = {2},
pages = {339--361},
}