Notice of RetractionA study on duopoly enterprises´ R&D Strategy based on network externalities

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

Based on D Aspremont & Jacquemin (1988) model, this paper studied the R&D Strategies of duopoly firms of network externalities. Firstly it had found out that with the network externalities increasing, the enterprises´ R&D investment, the enterprises´ product quantity and the social welfare increased Secondly when two enterprises chose the R&D cooperation, two enterprises´ profits increased with the network externalities increasing. When two enterprises chose the R&D competition, two enterprises´ profits increased with the weak network externalities increasing, two enterprises´ profits decreased with the strong network externalities increasing. Lastly it had found out that R&D RJV was the optimal Strategy in which enterprises´ R&D investment, enterprises´ product quantity, enterprises´ profit and social welfare all got the maximum. So R&D RJV should be encouraged and R&D Cartel should be regulated by our government