Calzolari, Giorgio; Magazzini, Laura and Mealli, Fabrizia (2001): Simulation-based estimation of Tobit model with random effects. Published in: Econometric Studies, a Festschrift in Honour of Joachim Frohn No. Ed. by R. Friedmann, L. Knueppel, and H. Luetkepohl . Muenster: LIT Verlag (2001): pp. 349-369.
Arpino, Bruno and Mealli, Fabrizia (2008): The specification of the propensity score in multilevel observational studies. Unpublished.
