@article{oai:tsukuba.repo.nii.ac.jp:00016157,
 author = {Mikawa, Hiroshi},
 issue = {2},
 journal = {Tsukuba Journal of Mathematics},
 month = {Dec},
 pages = {377--387},
 title = {On prime twins in arithmetic progressions},
 volume = {16},
 year = {1992}
}