@article{IvaRud:67a,
  journal = {Rev. Roumaine Math. Pures Appl.},
  volume = {12},
  title = {Minimization of switching circuits in actual operation},
  author = {Iv{\u{a}}nescu, Petru and Rudeanu, Sergiu},
  year = {1967},
  fjournal = {Acad\'emie de la R\'epublique Populaire Roumaine. Revue Roumaine
              de Math\'ematiques Pures et Appliqu\'ees},
  pages = {407--444},
}