@articleHaake_Upmann_Duman_2022, title=Wage Bargaining and Employment Revisited: Separability and Efficiency in Collective Bargaining, volume=125, DOI=https://doi.org/10.1111/sjoe.12518, number=2, journal=Scandinavian Journal of Economics, publisher=Wiley, author=Haake, Claus-Jochen and Upmann, Thorsten and Duman, Papatya, year=2022, pages=403–440 

@bookHaake_Upmann_Duman_2019, series=Working Papers CIE, title=The Decomposability of the Nash Bargaining Solution in Labor Markets, volume=128, publisher=CIE Working Paper Series, Paderborn University, author=Haake, Claus-Jochen and Upmann, Thorsten and Duman, Papatya, year=2019, collection=Working Papers CIE