@Inproceedings{BWMC2012,
    author    = {Vasile, Cristian Ioan and Pavel, Ana Br\^{a}ndu\c{s}a and Dumitrache, Ioan and P\u{a}un, Gheorghe},
    title     = {{Numerical P Systems}},
    year      = {2012},
    pages     = {26--29},
    booktitle = {{Proc. of the 10th Brainstorming Week on Membrane Computing}},
    address   = {Seville, Spain},
    month     = {February},
    note      = {\href{http://www.gcn.us.es/files/megapaperMG.pdf}{collective paper}: Research Topics in Membrane Computing: After CMC 12, Before BWMC 10, Eds. Gheorghe M., Paun Gh., Perez-Jimenez M.J.}
}