DanilovV. Ya., LavrovaO. E., and StanzhitskiiA. N. 2017. “Viscous Solutions for the Hamilton – Jacobi – Bellman Equation on Time Scales”. Ukrains’kyi Matematychnyi Zhurnal 69 (7), 933-50. https://umj.imath.kiev.ua/index.php/umj/article/view/1747.