3Portes, Alejandro & Zhou, Min 1993. "The New Second Generation: Segmented Assimilation and Its Variants", Annals of the American Academy of Political and Social Science. Vol. 530.
4Neyer, M. De, Gorez, R. & Barreto, J. 1993, "Fuzzy Integral Action in Model Based Control Systems", Second IEEE International Conference on Fuzzy Systems.