Investigation of the problem of multifunctional work of a bulldozer-loader by reducing the mathematical model to pairwise nested numerical methodsKuttubek Isakov, Toktobek Toktakunov, Kerimbek Osmonov and Amanbek AltybaevE3S Web Conf., 460 (2023) 06012DOI: https://doi.org/10.1051/e3sconf/202346006012