TY JOUR TI Modeling of differentiated norms for the maintenance of the technical customer based on functional-cost analysis KW technical customer KW construction supervision KW cost standards KW functional-cost analysis KW construction pricing KW estimated construction cost JO Construction production AU Didkovskaya, O.V. AU Mamaeva, O.A. AU Ilina, M.V. PY 2026 IS 0 PB Publishing Center RIOR