TY - JOUR AU - R.M. Redheffer AU - W. Walter TI - The Total Variation of Solutions of Parabolic Differential Equations and a Maximum Principle in Unbounded Domains. JO - Mathematische Annalen PY - 1974 SP - 57 EP - 68 VL - 209 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MAN_1974__209_162584/ ID - MAN_1974__209_162584 ER -