@article{oai:ynu.repo.nii.ac.jp:00008686,
 author = {Nakanishi, Noboru},
 issue = {2},
 journal = {Yokohama Mathematical Journal = 横濱市立大學紀要. D部門, 数学},
 month = {Mar},
 pages = {149--163},
 title = {Logarithmic-type functions of the differential operator},
 volume = {55},
 year = {2010}
}