@Article{Univ2013,
    author    = {Vasile, Cristian Ioan and Pavel, Ana Br\^{a}ndu\c{s}a and Dumitrache, Ioan},
    title     = {{Universality of Enzymatic Numerical P Systems}},
    month     = {February},
    year      = {2013},
    journal   = {International Journal of Computer Mathematics (special issue: Membrane Computing)},
    volume    = {90},
    number    = {4},
    pages     = {869--879},
    note      = {\href{http://www.tandfonline.com/doi/abs/10.1080/00207160.2012.748897}{doi: 10.1080/00207160.2012.748897}}
}