TY JOUR TI COMPARISON OF METHODS FOR INCREASING THE PRODUCTIVITY OF THE MAIN OIL PIPELINE WITHIN THE FRAMEWORK OF THE PLANNED MODERNIZATION KW PTP KW productivity improvement KW pipeline KW APR KW planned modernization JO MOSCOW ECONOMIC JOURNAL AU Sim, A.D. AU Atamanenko, R.B. AU Alekseeva, D.S. PY 2024 IS 9 PB Electronic science