Generating multidirectional variable hidden attractors via newly commensurate and incommensurate non-equilibrium fractional-order chaotic systems - Debbouche, Nadjette; Momani, Shaher; Ouannas, Adel; Shatnawi, ’Mohd Taib’; Grassi, Giuseppe; Zohir Dibi; Batiha, Iqbal M (Entropy, 2021)