On the symmetries of the differential equation governing damped harmonic vibration. Tapanidis, T.; Tsagas, Gr.; Mazumdar, H.P. — 2000 Balkan Journal of Geometry and its Applications (BJGA)
On the breaking of mirror symmetry in homogeneous isotropic turbulence-helicity effect. Mazumdar, H.P.; Tsagas, Gr.; Ghosh, S.C. — 2000 Balkan Journal of Geometry and its Applications (BJGA)