@article{oai:tsukuba.repo.nii.ac.jp:00016087,
 author = {Hanazawa, Masazumi},
 issue = {1},
 journal = {Tsukuba Journal of Mathematics},
 month = {Jun},
 pages = {117--132},
 title = {On a classification of Aronszajn trees II},
 volume = {5},
 year = {1981}
}