Reference
Jean-Pierre Florens, James J. Heckman, Costas Meghir, and Edward Vytlacil, “Identification of Treatment Effects Using Control Functions in Model with Continuous Endogenous Treatment and Heterogenous Effects”, Econometrica, vol. 76, n. 5, September 2008, pp. 1191–1206.
See also
Published in
Econometrica, vol. 76, n. 5, September 2008, pp. 1191–1206