Brunori, Paolo and O'Reilly, Marie (2010): Social protection for development: a review of definitions. Unpublished.
Calzolari, Giorgio; Fiorentini, Gabriele and Panattoni, Lorenzo (1993): Alternative estimators of the covariance matrix in GARCH models. Published in: Universita' di Messina, Istituto di Economia, Statistica e Analisi del Territorio No. Quaderno No. 11 (1993): pp. 1-33.
