%0 Journal Article %T Construct validity of an objective (entropy) categorical measure of diversification strategy %A Hoskisson, Robert E. %A Hitt, Michael A. %A Johnson, Richard A. %A Moesel, Douglas D. %J Strategic Management Journal %V 14 %N 3 %P 215-235 %@ 0143-2095 %D 1993-03-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve