@article{oai:kanazawa-u.repo.nii.ac.jp:00005179,
 author = {Yamamoto, Hiroh and Hirose, Iwao and Sahashi, Kenji and Kuroda, Kazuharu and Ueno, Yukio},
 journal = {金沢大学教育学部紀要　自然科学編 = Bulletin of the Faculty of Education, Kanazawa University. Natural science},
 month = {Sep},
 pages = {159--165},
 title = {A Study of Ball Velocity Measuring Device},
 volume = {30},
 year = {1981}
}