Template:Freidlin&Wentzell2004
From Manifold Atlas
M. I. Freidlin and A. D. Wentzell, Diffusion processes on an open book and the averaging principle, Stochastic Process. Appl. 113 (2004), no.1, 101–126. MR2078539 (2005e:60178) Zbl 1075.60100