@article{oai:tsukuba.repo.nii.ac.jp:00017255,
 author = {Ichiyama, Toshiyuki},
 issue = {1},
 journal = {Tsukuba Journal of Mathematics},
 month = {Jun},
 pages = {171--187},
 title = {The first variation formula for Weyl structures},
 volume = {26},
 year = {2002}
}