@misc{QuadrantiIturriozLezaGomezLopezetal.1988,
  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},
  booktitle = {K{\"o}lner Universalienprojekt: Arbeiten des K{\"o}lner Universalien-Projekts ; Nr. 69},
  series    = {Arbeiten des K{\"o}lner Universalien-Projekts : akup},
  number    = {69},
  type      = {workingpaper},
  pages     = {79},
  year        = {1988},
}