TY  - JOUR
AU  - Boarotto, Francesco
AU  - Nalon, Luca
AU  - Vittone, Davide
TI  - The Sard problem in step 2 and in filiform Carnot groups,
JO  - ESAIM: Control, Optimisation and Calculus of Variations
PY  - 2022
VL  - 28
PB  - EDP-Sciences
UR  - https://www.numdam.org/articles/10.1051/cocv/2022074/
DO  - 10.1051/cocv/2022074
LA  - en
ID  - COCV_2022__28_1_A75_0
ER  -