@article{IvaRosRud:63a,
  journal = {Acad. R. P. Rom\^{a} ne Stud. Cerc. Mat.},
  volume = {14},
  title = {On determining the minima of a pseudoboolean function},
  author = {Iv\u{a}nescu, Petru and Rosenberg, Ivo and Rudeanu, Sergiu},
  year = {1963},
  pages = {359--364},
}