Y. Khaya and B. Koumachi, “The Scope of Negation and Dual Operators in Standard Arabic: The Theory of Functional Discourse Grammar and Negative Operators on Dual Constructions”, IJLLT, vol. 5, no. 11, pp. 96–100, Nov. 2022, doi: 10.32996/ijllt.2022.5.11.11.