@article{IvaRud:67d,
  journal = {Ekonom.-Mat. Obzor},
  volume = {3},
  title = {Boolean methods in operations research},
  author = {Iv{\u{a}}nescu, Petru and Rudeanu, Sergiu},
  year = {1967},
  fjournal = {\v Ceskoslovensk\'a Akademie V\v ed. Ekonomicko-Matematick\'y
              Obzor},
  pages = {422--445},
}