@book{Diffusion,
  title={Multidimensional Diffusion Processes},
  author={Stroock, D.W. and Varadhan, S.R.S.},
  isbn={9783540903536},
  lccn={96027093},
  series={Grundlehren der mathematischen Wissenschaften},
  url={https://books.google.ca/books?id=DuDsmoyqCy4C},
  year={1997},
  publisher={Springer Berlin Heidelberg}
}