Notes, Comments and Preliminary results Jun 09 2015 Masahiko Hattori and Yasuhito Tanaka   Subsidy or tax policy for new technology adoption in duopoly with quadratic and linear cost functions   Abstract  Contact Information  Citation  Full Text  -  Preliminary Result   Sep 30 2014 Masahiko Hattori and Yasuhito Tanaka   Incentive for adoption of new technology in duopoly under absolute and relative profit maximization   Abstract  Contact Information  Citation  Full Text  -  Note