1. Addabbo, Tindara and Francesca Olivier. (2002). “Offerta di Lavoro e Servizi all’Infanzia in Italia - L’effetto dell’Introduzione dell’ISE.” Working Paper 381. Centro di Analisi delle Politiche Pubbliche, Modena
2. The Effect of Age at School Entry on Educational Attainment: An Application of Instrumental Variables with Moments from Two Samples
3. Bank of Italy. (1998). “Survey on Households, Income, and Wealth.” http://www.bancaditalia.it/statistiche/consultazione
4. Chevalier, Arnaud and Tarja Viitanien. (2004). “The Supply of Childcare in Britain: Do Mothers Queue for Childcare?” Mimeo