publication venue for Group of transformations with respect to the counterpart of Rapidity and Related field equations. 19:-. 2012-01-01 Eulerlagrange equations for functionals defined on Fréchet manifolds. 16:443-454. 2009-01-01 Mapping between the dynamic and mechanical properties of the relativistic oscillator and Euler free rigid body. 14:526-539. 2007-01-01 Mapping between the dynamic and mechanical properties of the relativistic oscillator and euler free rigid body. 14:534-547. 2007-01-01