3GALENDE J, DE LA FUENTE J M. Internal Factors Deter - mining a f'mn's Innovative Behavior [ J ]. Research Poli- cy, 2003, (32) : 715 - 736.
4FLOR M L, OLTRA M J. Identification of Innovating Firms through Technological Innovation Indicators: an Application to the Spanish Ceramic tile Industry [ J ]. Research Policy, 2004, (33) : 323 - 336.