@article{oai:tsukuba.repo.nii.ac.jp:00017251,
 author = {Takano, Mitio},
 issue = {2},
 journal = {Tsukuba Journal of Mathematics},
 month = {Oct},
 pages = {447--461},
 title = {Sequent calculi for three-valued logics},
 volume = {22},
 year = {1998}
}