@article{oai:repository.dl.itc.u-tokyo.ac.jp:00040216,
 author = {Kusuoka, Shigeo},
 issue = {1},
 journal = {Journal of mathematical sciences, the University of Tokyo},
 month = {},
 note = {application/pdf},
 pages = {43--70},
 title = {Laplace Approximations for Diffusion Processes on Torus: Nondegenerate Case},
 volume = {8},
 year = {2001}
}