Doloreux D, Shearmur R, Rodriguez M. Internal R&D and external information in knowledge-intensive business service innovation: complements, substitutes or independent?. TEDE [Internet]. 2018Nov.21 [cited 2024Nov.26];24(6):2255-76. Available from: https://jeelm.vgtu.lt/index.php/TEDE/article/view/5694