Bipolar Barotropic Non-Newtonian Compressible Fluids Šárka Matušu-Nečasová and Mária Medviďová-Lukáčová ESAIM: M2AN, 34 5 (2000) 923-934 Published online: 15 April 2002 DOI: 10.1051/m2an:2000109