Multi-layer cross-country maps as a data source for solving the problem of laying a routeRoman Dobretsov, Sergey Voinash, Sergey Ariko, Svetlana Partko, Abdul-Mudalif Dzjasheev, Ramil Zagidullin and Stanislav AkhmetshinE3S Web Conf., 471 (2024) 05001DOI: https://doi.org/10.1051/e3sconf/202447105001