TY - JOUR AU - Faifman, Dmitry TI - Contact integral geometry and the Heisenberg algebra JO - Geometry & topology PY - 2019 SP - 3041 EP - 3110 VL - 23 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.2140/gt.2019.23.3041/ DO - 10.2140/gt.2019.23.3041 ID - GT_2019_23_6_a6 ER -