%0 Journal Article %T A Mathematical Justification of the Momentum Density Function Associated to the KdV Equation %J Comptes Rendus. Mathématique %D 2021 %P 39-45 %V 359 %N 1 %I Académie des sciences, Paris %U https://doi.org/10.5802/crmath.143 %R 10.5802/crmath.143 %G en %F CRMATH_2021__359_1_39_0