DOI: https://doi.org/10.1016/S0123-9015(13)70033-7
DOI: https://doi.org/10.1016/S0123-9015(13)70034-9
DOI: https://doi.org/10.1016/S0123-9015(13)70035-0
DOI: https://doi.org/10.1016/S0123-9015(13)70036-2
DOI: https://doi.org/10.1016/S0123-9015(13)70037-4
DOI: https://doi.org/10.1016/S0123-9015(13)70038-6
DOI: https://doi.org/10.1016/S0123-9015(13)70039-8
DOI: https://doi.org/10.1016/S0123-9015(13)70040-4
DOI: https://doi.org/10.1016/S0123-9015(13)70041-6