@article{oai:omu.repo.nii.ac.jp:00008573,
 author = {Kasai, Tamotsu and Yamada, Shoichiro and Ono, Tetsuo},
 issue = {1},
 journal = {Bulletin of University of Osaka Prefecture. Series A, Engineering and natural sciences},
 month = {Nov},
 note = {application/pdf, Bulletin of University of Osaka Prefecture. Series A, Engineering and natural sciences. 1984, 33(1), p.47-64},
 pages = {47--64},
 title = {An Approximation Method for Planar Assignment Problem},
 volume = {33},
 year = {1984}
}