Athmouni, N., Damak, M., Franke, B. and Yaakoubi, N. 2023. On shifting the principal eigenvalue of Dirichlet problem to infinity with non-transversal incompressible drift. MATHEMATICA SCANDINAVICA. 129, 3 (Oct. 2023). DOI:https://doi.org/10.7146/math.scand.a-139656.