@article{oai:kwansei.repo.nii.ac.jp:00020072, author = {中西, 正雄 and Nakanishi, Masao}, issue = {3}, journal = {商学論究}, month = {Mar}, pages = {41--60}, title = {製品差別化と市場細分化は代替的戦略か?}, volume = {48}, year = {2001} }