@article{GeoPopD:68,
  journal = {Rev. Roumaine Math. Pures Appl.},
  volume = {13},
  title = {On algebraic categories},
  author = {Georgescu, George and Popescu, Dorin},
  year = {1968},
  fjournal = {Acad\'emie de la R\'epublique Populaire Roumaine. Revue Roumaine
              de Math\'ematiques Pures et Appliqu\'ees},
  pages = {337--342},
}