Borjas, George J Self-selection of emigrants : Theory and evidence on stochastic dominance in observable and unobservable characteristics / George J. Borjas, Ilpo Kauppinena and Panu Poutvaara - Cambridge NBER 2015 - 58p - NBER Working Paper ; 21649 . Subjects--Topical Terms: NBERWP 21649E15792.pdf