@article{oai:tsukuba.repo.nii.ac.jp:00017212,
 author = {Jianwei, Zhou},
 issue = {3},
 journal = {Tsukuba Journal of Mathematics},
 month = {Dec},
 pages = {447--463},
 title = {The upper bounds for eigenvalues of Dirac operators},
 volume = {23},
 year = {1999}
}