@article{oai:omu.repo.nii.ac.jp:00001393,
 author = {荒木, 長照},
 issue = {4},
 journal = {大阪府立大學經濟研究},
 month = {Sep},
 note = {application/pdf, 大阪府立大學經濟研究. 1998, 43(4), p.1-19},
 pages = {1--19},
 title = {改良型新製品の投入タイミング},
 volume = {43},
 year = {1998}
}