A diffusion process with a one-aided Brownian potential(共著). Tokyo Journal of Mathematies. 2001. 24(1),211-229
Random Walks and Diffusion processes in a Random Environment. Amrican Mathematical Society. 1998. 11. 1. 51-75
KAWAZU Kiyoshi, TANAKA Hiroshi. Invariance principle for a Brownian motion with large drift in a white noise environment. Hiroshima mathematical journal. 1998. 28. 1. 129-137