TY - JOUR AU - Detlef Müller AU - Zhenqiu Zhang TI - A class of solvable non-homogeneous differential operators on the Heisenberg group JO - Studia Mathematica PY - 2001 SP - 87 EP - 96 VL - 148 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm148-1-8/ DO - 10.4064/sm148-1-8 LA - en ID - 10_4064_sm148_1_8 ER -