On PT Symmetry Systems: Invariance, Conservation Laws, and Reductions. - Phetogo Masemola; Abdul Hamid Kara (J. Appl. Math., 2014)

Symmetry Reductions of the (1 + 1)-Dimensional Broer-Kaup System Using the Generalized Double Reduction Method. - Molahlehi Charles Kakuli; Winter Sinkala; Phetogo Masemola (Axioms, 2024)