A generalization of Straube's theorem: existence of absolutely continuous invariant measures for random maps. Islam, Md.Shafiqul; Góra, Pawel; Boyarsky, Abraham — 2005 Journal of Applied Mathematics and Stochastic Analysis
Invariant densities of random maps have lower bounds on their supports. Góra, Paweł; Boyarsky, Abraham; Islam, Md.Shafiqul — 2006 Journal of Applied Mathematics and Stochastic Analysis