MAP20080006907 Tanriverdi, Hüseyin Within-industry diversification and firm performance in the presence of network externalities En: Academy of management journal. - New York : Academy of Management, 1999-2010 = ISSN 0001-4573. - 01/04/2008 Tomo 51 Número 2 - 2008 I. Lee, Chi-Hyon . II. Title.