Scattering in abrupt heterostructures using a position dependent mass Hamiltonian R. Koç, M. Koca and G. Şahinoğlu Eur. Phys. J. B, 48 4 (2005) 583-586 Published online: 23 December 2005 DOI: 10.1140/epjb/e2005-00422-x