%0 Journal Article %A André Guerra %A Bogdan Raiţă %T On the necessity of the constant rank condition for $L^p$ estimates %J Comptes Rendus. Mathématique %D 2020 %P 1091-1095 %V 358 %N 9-10 %I Académie des sciences, Paris %R 10.5802/crmath.105 %G en %F CRMATH_2020__358_9-10_1091_0