TY - JOUR AU - Rupert L. Frank AU - Elliott H. Lieb TI - Sharp constants in several inequalities on the Heisenberg group JO - Annals of mathematics PY - 2012 SP - 349 EP - 381 VL - 176 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4007/annals.2012.176.1.6/ DO - 10.4007/annals.2012.176.1.6 LA - en ID - 10_4007_annals_2012_176_1_6 ER -