@article{oai:tsukuba.repo.nii.ac.jp:00018589,
 author = {Barletta, Elisabetta and Dragomir, Sorin},
 issue = {2},
 journal = {Tsukuba Journal of Mathematics},
 month = {Dec},
 pages = {417--436},
 title = {On the regularity of weak subelliptic F-harmonic maps},
 volume = {28},
 year = {2004}
}