Electroweak interaction model with an undegenerate double symmetry. Slad, Leonid M. (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]
Extension of the Poincaré symmetry and its field theoretical implementation. Tanasă, Adrian (2006) SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]