Tunneling of massive dirac fermions in graphene through time-periodic potentialAhmed Jellal, Miloud Mekkaoui, El Bouâzzaoui Choubabi and Hocine BahlouliEur. Phys. J. B, 87 6 (2014) 123DOI: https://doi.org/10.1140/epjb/e2014-41096-3