Dinu, T. L. “Entire Solutions of Schrodinger Elliptic Systems With Discontinuous Nonlinearity and sign‐changing Potential”. Mathematical Modelling and Analysis 11, no. 3 (September 30, 2006): 229-242. Accessed November 25, 2024. https://jau.vgtu.lt/index.php/MMA/article/view/9615.