Utegenova А.М. Questionnaire survey as a mechanism to monitor the satisfaction of investors . BUKETOV BUSINESS REVIEW, [S. l.], v. 86, n. 2, p. 104–111, 2017. Disponível em: https://bbr.buketov.edu.kz/economy-vestnik/article/view/123. Acesso em: 8 dec. 2025.