Andrii Babii, and Jean-Pierre Florens, “Is completeness necessary? Estimation in nonidentified linear models”, TSE Working Paper, n. 20-1091, April 2020, revised April 2021.
Andrii Babii, and Jean-Pierre Florens, “Are unobservables separable?”, TSE Working Paper, n. 17-802, May 2017, revised January 2020.