@article{oai:u-ryukyu.repo.nii.ac.jp:02007114,
 author = {Kakazu, Kiyotaka and 賀数, 清孝},
 issue = {24},
 journal = {琉球大学理工学部紀要. 理学編, Bulletin of Science & Engineering Division, University of Ryukyus. Mathematics & natural sciences},
 month = {Sep},
 note = {A general rule for obtaining both the commutator and anticommutator for any two points in space-time is studied in the case of the absence of interaction. The anticommutator is determined except for its sign. Examples of the use of this method are given., 紀要論文},
 pages = {29--34},
 title = {An Approach to the Commutation Relations in Quantum Field Theory},
 year = {1977}
}