TY - JOUR AU - Yury A. Grigoryev AU - Alexey P. Sozonov AU - Andrey V. Tsiganov TI - Integrability of Nonholonomic Heisenberg Type Systems JO - Symmetry, integrability and geometry: methods and applications PY - 2016 VL - 12 UR - http://geodesic.mathdoc.fr/item/SIGMA_2016_12_a111/ LA - en ID - SIGMA_2016_12_a111 ER -