VUKOSZAVLYEV, Szlobodan. Comparison of R&D innovation indicators of the visegrád group. International Journal of Engineering and Management Sciences, [S. l.], v. 4, n. 2, p. 162–172, 2019. Disponível em: https://ojs.lib.unideb.hu/IJEMS/article/view/5288.. Acesso em: 28 apr. 2024.