R. Bakhshandeh-Chamazkoti, “The Geometry of Fourth Order Differential Operator”, International Journal of Geometric Methods in Modern Physics, 12 (2015), 1550055, 15 pp.
M. Nadjafikhah, R. Bakhshandeh-Chamazkoti, “Web geometry of a system of first order autonomous ordinary differential equations”, Journal of Dynamical and Control Systems, 2015
M. Nadjafikhah, R. Bakhshandeh-Chamazkoti, “Cartan equivalence method for third order differential operators”, Turk. J. Math, 37 (2013), 949-958
Mэ. Nadjafikhah, R. Bakhshandeh-Chamazkoti, F. Ahangari, “Potential symmetries andэ
эconservation laws for generalized quasilinear hyperbolic equations”, Appl. Math. Mech. Engl. Ed.,, 32:12 (2011), 1607-1614
M. Nadjafikhah, R. Bakhshandeh-Chamazkoti, “Symmetry group classification for general Burgers' equation”, Commun Nonlinear Sci Numer Simulat, 15 (2010), 2303-2310