@article{oai:u-ryukyu.repo.nii.ac.jp:02005354,
 author = {Nishishiraho, Toshihiko and 西白保, 敏彦},
 journal = {Ryukyu mathematical journal},
 month = {Mar},
 note = {紀要論文},
 pages = {49--81},
 title = {Saturation of iterations for approximation processes on Banach spaces},
 volume = {2},
 year = {1990}
}