Blundell, Richard; Matzkin, Rosa L. - In: Quantitative Economics 5 (2014) 2, pp. 271-295
The control function approach (Heckman and Robb (1985)) in a system of linear simultaneous equations provides a … nonparametric simultaneous equations has thus far been unknown. In this paper, we define a new property of functions called control … function separability and show it provides a complete characterization of the structural systems of simultaneous equations in …