Non-commutative mechanics in mathematical and in condensed matter physics. Horváthy, Peter A. — 2006 SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
Exotic galilean symmetry and non-commutative mechanics. Horváthy, Peter A.; Martina, Luigi; Stichel, Peter C. — 2010 SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]