“…Artola and Genre, 2011, Kumar and Francisco, 2005, overview in Musso and Schiavo, 2008 and are thus based on self-assessment together with all its disadvantages. The other empirical approach to detect financial constraints is based on segmentation of firms into groups based on one or more different criteria, such as dividend policy, size, age, and membership in a group of conglomerate, existence of bond rating or concentration of ownership (see Musso and Schiavo, 2008, for a comprehensive review of these studies). One of the main weaknesses of these studies is first its time invariance, second, when dividend policy is concerned, the analysis is restricted to quoted firms, which are usually also larger and more mature.…”