TY - JOUR AU - Andrea Bonfiglioli AU - Francesco Uguzzoni TI - Editorial note to: “Some non-existence results for critical equations on step-two stratified groups” [C. R. Acad. Sci. Paris, Ser. I 336 (2003) 817–822] JO - Comptes Rendus. Mathématique PY - 2003 SP - 171 VL - 337 IS - 3 PB - Elsevier DO - 10.1016/S1631-073X(03)00315-7 LA - en ID - CRMATH_2003__337_3_171_0 ER -