@article{oai:omu.repo.nii.ac.jp:00008741,
 author = {Murotsu, Yoshisada and Taguchi, Katashi},
 issue = {2},
 journal = {Bulletin of University of Osaka Prefecture. Series A, Engineering and natural sciences},
 month = {Mar},
 note = {application/pdf, Bulletin of University of Osaka Prefecture. Series A, Engineering and natural sciences. 1975, 23(2), p.177-192},
 pages = {177--192},
 title = {Opimization of Ship Fleet-Size},
 volume = {23},
 year = {1975}
}