TY - JOUR T1 - Pushing incomes to reference points: Why do male doctors earn more? AU - Rizzo, John A. AU - Zeckhauser, Richard PY - 2007 DO - 10.1016/j.jebo.2005.06.007 SP - 514 EP - 536 JO - Journal of Economic Behavior and Organization VL - 63 IS - 3 SN - 0167-2681 ER -