On coupled systems of Kolmogorov equations with applications to stochastic differential games Davide Addona, Luciana Angiuli, Luca Lorenzi and Gianmario Tessitore ESAIM: COCV, 23 3 (2017) 937-976 Published online: 03 May 2017 DOI: 10.1051/cocv/2016019