TY - JOUR AU - Isolda Cardoso AU - Linda Saal TI - Explicit fundamental solutions of some second order differential operators on Heisenberg groups JO - Colloquium Mathematicum PY - 2012 SP - 263 EP - 288 VL - 129 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm129-2-7/ DO - 10.4064/cm129-2-7 LA - en ID - 10_4064_cm129_2_7 ER -