MARKETING INNOVATIONS IN THE SMES IN BULGARIA AND ICELAND: EMPIRICAL STUDY ON CURRENT SITUATION. International Journal of Innovative Technologies in Economy, [S. l.], n. 1(13), p. 157–164, 2018. Disponível em: https://rspublisher.org/index.php/ijite/article/view/643. Acesso em: 18 mar. 2026.