Construct validity of an objective (entropy) categorical measure of diversification strategy.
        
            Journal Articles
      
  
    
      
        
            Management
      
  
    
      
        
            1993
      
  
    
  Hoskisson, R.E., Hitt, M.A., Johnson, R.A., & Moesel, D.D. (1993). Construct validity of an objective (entropy) categorical measure of diversification strategy. Strategic Management Journal, 14(3): 215-235.