@unpublished{Baer2012,
  author  = {Christian B{\"a}r},
  title   = {Renormalized integrals and a path integral formula for the heat kernel on a manifold},
  institution = {Institut f{\"u}r Mathematik},
  series    = {Preprints des Instituts f{\"u}r Mathematik der Universit{\"a}t Potsdam},
  number    = {1(2012)21},
  year    = {2012},
}