@article{oai:tohoku.repo.nii.ac.jp:00130737,
 author = {SUGAWA, Toshiyuki and WANG, Li-Mei},
 issue = {1},
 journal = {Interdisciplinary information sciences},
 month = {Sep},
 note = {紀要類（bulletin）},
 pages = {45--52},
 title = {An Extremal Problem for Univalent Functions},
 volume = {25},
 year = {2019}
}