TY JOUR TI THEORETICAL-METHODOLOGICAL BASES AND RESULTS OF ESTIMATION OF THE EFFECTIVENESS OF CLUSTER SPATIAL DEVELOPMENT OF THE RUSSIAN FEDERATION REGIONS KW cluster economic space KW clustering of regional economy KW territorial clusters KW cluster policy KW effectiveness KW criterial and indicative approach KW regional cluster index KW methods KW evaluation algorithm JO Vestnik of Astrakhan State Technical University. Series: Economics AU Kovaleva, T.. PY 2018 IS PB Astrakhan State Technical University