Alves, Claudianor O., and Rúbia G. Nascimento. “Existence and Concentration of Solutions for a Class of Elliptic Problems With Discontinuous Nonlinearity in $\mathbf{R}^{N}$”. Mathematica Scandinavica 112, no. 1 (March 1, 2013): 129–146. Accessed July 24, 2026. https://journals.msp.org/mscand/article/view/460.