Colţoiu, Mihnea Max Planck Institute for Mathematics, Max Planck Society;
Colţoiu, M., & Diederich, K. (2007). The Levi problem for Riemann domains over Stein spaces with isolated singularities. Mathematische Annalen, 338(2), 283-289. doi:10.1007/s00208-006-0075-x.