@article{CetGraJonSub:03,
  journal = {Fund. Inform.},
  volume = {56},
  title = {Tissue-like {P} systems with active membranes for picture
           generation},
  year = {2003},
  fjournal = {Fundamenta Informaticae},
  pages = {311--328},
  number = {4},
  author = {Ceterchi, Rodica and Gramatovici, Radu and Jonoska, Nata{\v{s}}a and
            Subramanian, K. G.},
}