@article{oai:hachinohe-hachitan.repo.nii.ac.jp:00000859,
 author = {柳川, 實},
 issue = {2},
 journal = {八戸大学紀要},
 month = {Mar},
 pages = {213--227},
 title = {Duality Mappings and Semi-inner Products in Complementary Systems},
 year = {1983}
}