For citations:

Hamidullin R.I., Senkevich L.B. ABOUT NECESSITY OF MATHEMATICAL MODELING OF THE BUSINESS PROCESS OF COST ESTIMATE CALCULATIONS IN THE CONSTRUCTION OF OIL AND GAS FACILITIES. Oil and Gas Studies. 2017;(6):139-145. (In Russ.) https://doi.org/10.31660/0445-0108-2017-6-139-145