@misc{Hanna_Joseph_R&d,
 author={Hanna, Joseph},
 howpublished={online},
 publisher={Publishing House of the University of Economics in Katowice},
 language={eng},
 title={R&d rivalry and cooperation in duopoly: firm organization, welfare and policy implications},
 type={czasopismo},
 keywords={Cournot equilibrium, R&D, spillover, two stage-game},
}