“The Study of Unfolding Process of Human Serum Albumin In Acid pH Region by Two-Dimensional Infrared Correlation Spectroscopy” Koichi Murayama, Boguslawa Czarnik-Matusewicz, Yuqing Wu, Romiana Tsenkova, and Yukihiro Ozaki, Two-dimensional Correlation Spectroscopy（American Institute of Physics）, Edited by Y. Ozaki and I. Noda, Melville, New York, 2000, P283-286.