@article{oai:niigata-u.repo.nii.ac.jp:00002082,
 author = {Hosokawa, Takuya and Izuchi, Keiji},
 issue = {3},
 journal = {Journal of the Mathematical Society of Japan},
 month = {},
 note = {We study essential norms of differences of composition operators on the Banach algebra H^∞ of bounded analytic functions on the unit disk.},
 pages = {669--690},
 title = {Essential norms of differences of composition operators on H^∞},
 volume = {57},
 year = {2005}
}