TY - BOOK AU - Christensen,Clayton M. TI - The innovator's dilemma: when new technologies cause great firms to fail SN - 0875845851 (alk. paper) AV - HD53 .C49 1997 .C49 1997 U1 - 658 20 PY - 1997/// CY - Boston, Mass. PB - Harvard Business School Press ER -