共 50 条
- [36] Direct and Indirect Ties to Universities: Firm Heterogeneity, R&D Collaboration and Innovative Performance in the Biopharmaceutical Industry PROCEEDINGS OF THE 9TH INTERNATIONAL CONFERENCE ON INNOVATION AND MANAGEMENT, 2012, : 117 - +
- [38] The implications of debt heterogeneity for R&D investment and firm performance ACADEMY OF MANAGEMENT JOURNAL, 2008, 51 (01): : 165 - 181
- [39] R&D intensity and firm performance-sectoral differences MANAGEMENT OF TECHNOLOGY INNOVATION AND VALUE CREATION, 2008, 2 : 39 - 53