Steincy franck Peala, Konan Charles Etienne Goli, Assohoun Adje. Existence of Solutions for Nabla-differentiable Systems of the Second Order. Int. J. Math. And Appl. [Internet]. 2023 Aug. 9 [cited 2024 Jul. 3];11(3):71-92. Available from: https://ijmaa.in/index.php/ijmaa/article/view/1190