COMPARISON OF CAD AND BIM TECHNOLOGY EFFICIENCY WITH THE USE OF A MATHEMATICAL MODEL Solovyev D.B., Kopotilova V.G., Katyuk D.P., Pirus A.V., Grigoryuk V.A., Krylova A.I. https://doi.org/10.34031/2618-7183-2021-4-1-18-26 Download PDF 18-26 p. solovev