@article{oai:icu.repo.nii.ac.jp:00004802,
 author = {Nambu, Satoshi},
 journal = {ICUWPL},
 month = {Mar},
 pages = {65--72},
 title = {Zero Copula in Japanese: Learners’ Use and Attitude},
 volume = {10},
 year = {2020}
}