@article{Vai:66,
  journal = {B\cdprime lgar. Akad. Nauk. Otd. Mat. Fiz. Nauk. Izv. Mat. Inst.},
  volume = {9},
  title = {Certain results concerning algebraic partially ordered systems},
  year = {1966},
  mrnumber = {MR0215763 (35 \#6598)},
  pages = {227--236},
  mrclass = {06.78 (46.00)},
  author = {Vaida, Drago{\c{s}}},
  mrreviewer = {S. P. Bandyopadhyay},
}