@article{oai:nagasaki-u.repo.nii.ac.jp:00023864,
 author = {Hiraoka, Kenji and Nakasako, Ayumu and Kajimoto, Hiroshi},
 journal = {長崎大学教育学部紀要. 自然科学},
 month = {Mar},
 note = {We treat rotation matrices of given axes and angles in the space R^3 = ImH of pure imaginary quaternions. We give a product formula of rotation matrices of given axes vectors and so explain the group structure on SO(3)～RP^3 from the view point of axes and angles., 長崎大学教育学部紀要. 自然科学. vol.70, p.1-7; 2004},
 pages = {1--7},
 title = {On Rotation Matrices of given Axes and Angles and the Group Structure on SO(3)},
 volume = {70},
 year = {2004}
}