@article{oai:tsukuba.repo.nii.ac.jp:00015679,
 author = {Koshitani, Shigeo},
 journal = {Tsukuba Journal of Mathematics},
 month = {Dec},
 pages = {137--148},
 title = {On the nilpotency indices of the radicals of group algebras of P-groups which have cyclic subgroups of index P},
 volume = {1},
 year = {1977}
}