EL-OWAIDY, H.; AMMAR, A. A.; EL-LEITHY, O. A. COMPETITION IN THE GRADOSTAT FOR THE CASE OF THREE VESSELS AND THREE POPULATIONS. Tamkang Journal of Mathematics, [S. l.], v. 21, n. 2, p. 143–158, 1990. DOI: 10.5556/j.tkjm.21.1990.4650. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4650. Acesso em: 30 apr. 2024.