Lara, Teodoro, Nelson Merentes, Edgar Rosales, and Ambrosio Tineo. 2018. “Properties and Characterizations of Convex Functions on Time Scales”. Annales Mathematicae Silesianae 32 (January):237-45. https://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/13923.