[1]
Papageorgiou, N.S. and Rădulescu, V.D. 2017. Positive solutions for parametric semilinear Robin problems with indefinite and unbounded potential. MATHEMATICA SCANDINAVICA. 121, 2 (Oct. 2017), 263–292. DOI:https://doi.org/10.7146/math.scand.a-96696.