IDEAS home Printed from
   My bibliography  Save this article

A Product Line Life Cycle Model of Intra-industry Trade


  • William Milberg


This paper develops a technology-gap model of intraindustry trade in oligopoly industries with megacorp pricing. Firms maximize market share by choosing available products in the product line. They produce subject to a product life cycle and a constraint that the markup over average costs must be sufficient to generate funds for investment in capacity replacement, capacity expansion to meet market growth, and for product innovation. The argument shows that research and development expenditures are a necessary form of ongoing investment, not a discretionary item as is implicit in much of the literature on the theory of the firm.

Suggested Citation

  • William Milberg, 1988. "A Product Line Life Cycle Model of Intra-industry Trade," Eastern Economic Journal, Eastern Economic Association, vol. 14(4), pages 389-397, Oct-Dec.
  • Handle: RePEc:eej:eeconj:v:14:y:1988:i:4:p:389-397

    Download full text from publisher

    File URL:
    Download Restriction: no

    References listed on IDEAS

    1. Krugman, Paul, 1980. "Scale Economies, Product Differentiation, and the Pattern of Trade," American Economic Review, American Economic Association, vol. 70(5), pages 950-959, December.
    2. Ethier, Wilfred, 1979. "Internationally decreasing costs and world trade," Journal of International Economics, Elsevier, vol. 9(1), pages 1-24, February.
    3. Gary Hufbauer, 1970. "The Impact of National Characteristics & Technology on the Commodity Composition of Trade in Manufactured Goods," NBER Chapters,in: The Technology Factor in International Trade, pages 145-231 National Bureau of Economic Research, Inc.
    Full references (including those not matched with items on IDEAS)

    More about this item


    Access and download statistics


    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eej:eeconj:v:14:y:1988:i:4:p:389-397. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Victor Matheson, College of the Holy Cross). General contact details of provider: .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.