Kurudzhi, Yulia, Iryna Moskvichenko, and Mykhaylo Postan. 2017. “Method of Finding Equilibrium Solutions for Duopoly of Supply Chains Taking into Account the Innovation Activity of Enterprises”. Eastern-European Journal of Enterprise Technologies 3 (4 (87):25-30. https://doi.org/10.15587/1729-4061.2017.103989.