KHORUNZHAK, Nadiia. Formalization of employee motivation model and assessment of its effectiveness. Herald of Economics, [S. l.], n. 1(87), p. 85–97, 2019. DOI: 10.35774/10.35774/visnyk2018.01.085. Disponível em: https://visnykj.wunu.edu.ua/index.php/htneu/article/view/906.. Acesso em: 6 apr. 2025.