@article{oai:barrel.repo.nii.ac.jp:00002311,
 author = {Kodaira, Hiroshi},
 issue = {2},
 journal = {商学討究},
 month = {Oct},
 note = {論説},
 pages = {70--86},
 title = {The Value of Improved Information},
 volume = {30},
 year = {1979}
}