D. S. K. J. Al-Najm, “The origin and type of Rajaz between the ancients and moderns: Qutrub`s Phonetic theory and the position of linguistics and grammarians towards it ”, Journal of Juris, vol. 1, no. 4, pp. 43–67, Jun. 2007, doi: 10.36324/fqhj.vi4.8374.