Über das Modell einer nicht-Newtonschen Flüssigkeit mit Relaxationseigenschaften. Wolf von Wahl (1977) Manuscripta mathematica
Une méthode d'approximation mixte des équations des fluides non newtoniens de troisième grade. Chérif Amrouche, Vivette Girault (1988) Numerische Mathematik
Uniqueness of a solution of the Cauchy problem for one-dimensional compressible viscous micropolar fluid model. Mujaković, Nermina (2006) Applied Mathematics E-Notes [electronic only]
Universal flows in the simplest theories of fluids R. L. Fosdick, C. Truesdell (1977) Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
Unsteady solutions in a third-grade fluid filling the porous space. Hayat, T., Mambili-Mamboundou, H., Mahomed, F.M. (2008) Mathematical Problems in Engineering
Unsteady stagnation point flow of a non-Newtonian second-grade fluid. Labropulu, F., Xu, X., Chinichian, M. (2003) International Journal of Mathematics and Mathematical Sciences
Unsteady stagnation-point flow of a viscoelastic fluid in the presence of a magnetic field. Labropulu, F. (2008) International Journal of Mathematics and Mathematical Sciences