TY JOUR TI BUILDING A DIGITAL TERRAIN MODEL IN DESIGNING ROUTES OF LINEAR OBJECTS KW digital terrain model KW geoinformation systems KW route design JO MOSCOW ECONOMIC JOURNAL AU Iralieva, Y.S. AU Lavrennikova, O.A. AU Petrov, M.A. AU Kudryashova, Y.N. PY 2024 IS 9 PB Electronic science