Determinants of the Variance in Market Shares in Canadian Manufacturing
研究了影响加拿大制造业企业市场份额差异的因素，将工业集中度的分析从企业数量扩展到企业规模不平等，为理解市场结构提供新视角。
COMMONLY used measures of industrial concentration can be expressed as functions of the number of firms in an industry and a measure of firm size inequality. Prior studies of the causes of industrial concentration have emphasized factors affecting the number of firms in an industry.' We expand the study of causes of concentration by examining factors which affect the variance in market shares as a measure of firm size inequality.