Y. A. Qasem, F., and A. A. M. Saleem. “On Certain Types of Affine Motion”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 27, no. 1, May 2016, pp. 95-114, https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/5524.