@phdthesis{oai:tsukuba.repo.nii.ac.jp:00032398,
 author = {馬場, 隆行 and Baba, Takayuki},
 month = {},
 note = {2013},
 school = {筑波大学, University of Tsukuba},
 title = {Energy from the gauge invariant observables},
 year = {2014}
}