TY - JOUR AU - Joachim Naumann TI - On the existence of weak solutions to a model problem for the unsteady turbulent pipe-flow JO - Comptes Rendus. Mathématique PY - 2013 SP - 451 EP - 456 VL - 351 IS - 11-12 PB - Elsevier DO - 10.1016/j.crma.2013.06.011 LA - en ID - CRMATH_2013__351_11-12_451_0 ER -