This paper is concerned with non-selfadjoint elliptic problems having a principal part in divergence form and involving an indefinite weight. We study the asymptotic behavior of the principal eigenvalues when the zero order term becomes larger and larger. Use is made of a minimax formula for these principal eigenvalues.
"Principal eigenvalues of elliptic problems with large potential." Differential Integral Equations 28 (9/10) 1029 - 1038, September/October 2015. https://doi.org/10.57262/die/1435064549