TY JOUR TI STRATEGIC ANALYSIS OF COMPETITIVE POSITIONS OF OIL AND GAS COMPANIES IN KAZAKHSTAN KW strategic analysis KW competitive analysis KW oil and gas market of Kazakhstan KW market of oil production and petroservice KW ABC analysis KW Boston Consulting Group matrix JO Vestnik of Astrakhan State Technical University. Series: Economics AU Pervitskaya, T.. AU Gavrilova, O.. AU Nikulina, T.. AU Shendo, M.. PY 2017 IS PB Astrakhan State Technical University