Economic Analysis on multiproduct firms ; optimal policy for dumping and below-cost sales

本文运用古诺寡头垄断模型分析了多产品企业低于成本定价或倾销的发生情况，以及相应的监管或贸易政策。我们假设多产品企业是既生产相关产品，如复印机和墨盒的企业。一个有趣的发现是，在机械市场完全竞争的情况下，价格会低于成本。理想的监管取决于自由进入市场与否。发表论文3篇，在学术期刊发表论文2篇，出版专著2篇，面向科研人员、学生和公众。

We analyze occurrence of below cost pricing or dumping by multiproduct firms and desirable regulation or trade policies on it using a Cournot oligopoly model. We suppose multiproduct firms as the firms that produce both related products such as copying machine and ink cartridge. One of interesting findings is below cost pricing occurs under perfect competition of machine market. Desirable regulation depends on free entry market or not. We have 3 presentations, publish 2 works in refereed journals, and publish 2 works in the books for researchers, students and public.