@article{oai:tsukuba.repo.nii.ac.jp:00007319,
 author = {Nishida, Koichi},
 journal = {Tsukuba English Studies},
 month = {Sep},
 pages = {43--74},
 title = {Arguments for the Heterogeneity of English Be},
 volume = {15},
 year = {1996}
}