ДЛІГАЧ, А. О. Development of mathematical model of system-reflexive marketing. Technology audit and production reserves, [S. l.], v. 4, n. 2(18), p. 51–58, 2014. DOI: 10.15587/2312-8372.2014.26366. Disponível em: https://journals.uran.ua/tarp/article/view/26366. Acesso em: 5 may. 2024.