Luk’yanovaT. A., and MartynyukA. A. “Integral Inequalities and Stability of an Equilibrium State on a Time Scale”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 62, no. 11, Nov. 2010, pp. 1490–1499, https://umj.imath.kiev.ua/index.php/umj/article/view/2973.