Abdelouaheb Ardjouni, Ahcene Djoudi. Existence of positive periodic solutions for nonlinear neutral dynamic equations with variable delay on a time scale. Malaya J. Mat. [Internet]. 2013 Apr. 1 [cited 2024 Nov. 22];1(02):60-7. Available from: https://www.malayajournal.org/index.php/mjm/article/view/351