https://www.sciencedirect.com/science/article/pii/S0149763415302669 https://www.sciencedirect.com/science/article/pii/S014976341... https://www.sciencedirect.c

https://www.sciencedirect.com/science/article/pii/S0149763415302669 https://www.sciencedirect.com/science/article/pii/S014976341... https://www.sciencedirect.com/science/article/pii/S221315821630064X https://www.sciencedirect.com/science/article/pii/S221315821...