Path Integral Solution of Linear Second Order Partial Differential   Equations II. Elliptic, Parabolic and Hyperbolic Cases
  A theorem that constructs a path integral solution for general second order partial differential equations is specialized to obtain path integrals that are solutions of elliptic, parabolic, and hyperbolic linear second order partial differential equations with Dirichlet/Neumann boundary conditions. The construction is checked by evaluating several known kernels for regions with planar and spherical boundaries. Some new calculational techniques are introduced. 
J. LaChapelle