@article{oai:tsukuba.repo.nii.ac.jp:00015711,
 author = {Sato, Masahisa},
 issue = {2},
 journal = {Tsukuba Journal of Mathematics},
 month = {Dec},
 pages = {203--220},
 title = {Codivisible modules, weakly-codivisible modules and strongly η-projevtive modules},
 volume = {4},
 year = {1980}
}