АЛЬРЕФАИ, В. А.; МОХАММАД, Р. А. А. А. Developing methods for investigating stable motions in lotka-volterra systems with periodic perturbations. Eastern-European Journal of Enterprise Technologies, [S. l.], v. 1, n. 4(73), p. 58–61, 2015. DOI: 10.15587/1729-4061.2015.37800. Disponível em: https://journals.uran.ua/eejet/article/view/37800. Acesso em: 21 dec. 2025.