“AR-GE YATIRIMLARININ FİNANSAL PERFORMANS ÜZERİNE ETKİSİNİN VERİ ZARFLAMA ANALİZİ İLE İNCELENMESİ”. Business & Management Studies: An International Journal 8, no. 3 (September 25, 2020): 2649–2674. Accessed August 6, 2025. https://www.bmij.org/index.php/1/article/view/1539.