Symplectic analysis of three-dimensional Abelian topological gravity R. Cartas-Fuentevilla, Alberto Escalante and Alfredo Herrera-Aguilar Eur. Phys. J. Plus, 132 2 (2017) 63 Published online: 07 February 2017 DOI: 10.1140/epjp/i2017-11346-7