ABDEL-GAWAD, H.; ABDEL-GAWAD, A. H. Mathematical analysis of the new α - difference operator with an application to prey-predator model with harvesting. Quadratic invariant. Annals of Mathematics and Physics, [S. l.], v. 7, n. 1, p. 054–063, 2024. DOI: 10.17352/amp.000106. Disponível em: https://www.peertechzpublications.us/amp/article/view/AMP-7-206. Acesso em: 10 jan. 2025.