@article{oai:tsukuba.repo.nii.ac.jp:00049387,
 author = {平良, 和昭 and TAIRA, Kazuaki},
 issue = {1},
 journal = {Rendiconti del Circolo matematico di Palermo 2},
 month = {Apr},
 pages = {193--217},
 title = {A strong maximum principle for globally hypoelliptic operators},
 volume = {68},
 year = {2019},
 yomi = {タイラ, カズアキ}
}