李太勇. 产品差别化与市场进入壁垒[J]. Foreign Economics & Management, 1999, 21(5): 0.
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Foreign Economics & Management
LiZengquan, Editor-in-Chief
ZhengChunrong, Vice Executive Editor-in-Chief
YinHuifang HeXiaogang LiuJianguo, Vice Editor-in-Chief