1. Oka’s Heftungslemma and the Levi problem for complex spaces;['Andreotti, Aldo', 'Narasimhan, Raghavan'];Trans. Am. Math. Soc.,1964
2. Cartier and Weil divisors on varieties with quotient singularities;['Artal-Bartolo, Erique A.', 'Martín-Morales, Jorge', 'Ortigas-Galindo, Jorge'];Int. J. Math.,2014
3. [3] Bourbaki, Nicolas Elements of mathematics. General topology. Chapters 5-10, Springer, 1989 (translated from the French. 2nd printing)
4. Cohomology of -convex spaces in top degrees;['Demailly, Jean-Pierre'];Math. Z.,1990
5. [5] Demailly, Jean-Pierre Complex Analytic and Differential Geometry (2012) (https://www-fourier.ujf-grenoble.fr/~demailly/manuscripts/agbook.pdf)