BINDERMAN, Zbigniew; BORKOWSKI, Bolesław; SZCZESNY, Wiesław. Radar coefficient of concentration. Metody Ilościowe w Badaniach Ekonomicznych, [S. l.], v. 13, n. 2, p. 7–21, 2012. Disponível em: https://qme.sggw.edu.pl/article/view/3531. Acesso em: 3 kwi. 2025.