@article{Rud:06,
  journal = {Bull. Math. Soc. Sci. Math. Roumanie (N.S.)},
  volume = {49(97)},
  title = {On unary lattice functions and {B}oolean functions},
  year = {2006},
  fjournal = {Bulletin Math\'ematique de la Soci\'et\'e des Sciences
              Math\'ematiques de Roumanie. Nouvelle S\'erie},
  pages = {87--98},
  number = {1},
  author = {Rudeanu, Sergiu},
}