TY CONF TI OVERVIEW OF ANALOGUES OF A MOBILE APPLICATION FOR CALCULATING THE COST OF A DRAINAGE SYSTEM KW drainage system KW estimates KW quality control KW construction KW design JO MODELING INFORMATION SYSTEMS AND TECHNOLOGIES AU Barkalova, E.V. AU Konyakova, A.S. PY 2024 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov