Martínez-Alonso, Rubén, María J. Martínez-Romero, and Alfonso A. Rojo-Ramírez. “R&D Collaboration Breadth and Family-Firm Innovation Efficiency: The Role of Family Management and Generational Stage”. Technological and Economic Development of Economy 29, no. 2 (March 20, 2023): 677–695. Accessed May 6, 2024. https://journals.vilniustech.lt/index.php/TEDE/article/view/18526.