Burlakov, Evgenii O., et al. “On Order Covering Set-Valued Mappings and Their Applications to the Investigation of Implicit Differential Inclusions and Dynamic Models of Economic Processes”. Advances in Systems Science and Applications, vol. 22, no. 1, Apr. 2022, pp. 176-91, doi:10.25728/assa.2022.22.1.1225.