@article{Rud:03b,
  journal = {An. Univ. Craiova Ser. Mat. Inform.},
  volume = {30},
  title = {A differential description of uniquely solvable {B}oolean equations},
  year = {2003},
  fjournal = {Analele Universit\u a\c tii din Craiova. Seria Matematic\u
              a-Informatic\u a},
  pages = {156--161},
  number = {2},
  author = {Rudeanu, Sergiu},
}