Drift-free left invariant control system on G 4 with fewer controls than state variables. Pop, Camelia; Aron, Anania — 2009 Analele Ştiinţifice ale Universităţii “Ovidius" Constanţa. Seria: Matematică
Quadratic and homogeneous Hamilton-Poisson systems on A 3 , 6 , - 1 * . Aron, Anania; Craioveanu, Mircea; Pop, Camelia; Puta, Mircea — 2010 Balkan Journal of Geometry and its Applications (BJGA)