@misc{QuadrantiIturriozLezaGomezLopezetal.,
  author    = {Piergiorgio Quadranti and Jos{\´e} Luis Iturrioz Leza and Paula G{\´o}mez L{\´o}pez and Rrit{\´a}kame Ram{\´i}rez de la Cruz},
  title     = {Kant, Piaget et Unityp},
  series    = {Arbeiten des K{\"o}lner Universalien-Projekts : akup},
  number    = {69},
  pages     = {79},
}