AKGUN, Muslum Aykut, and Ali Ihsan SIVRIDAG. β€œON THE CHARACTERIZATIONS OF SPACELIKE CURVES IN R_1^4”. International Journal of Physics & Mathematics (IJPM) 1, no. 1 (March 13, 2016): 9–22. Accessed April 21, 2026. https://ijpm.ielas.org/index.php/ijpm/article/view/1.