TY - JOUR AU - Stjepan Meljanac AU - Rina Štrajn TI - Exponential Formulas, Normal Ordering and the Weyl–Heisenberg Algebra JO - Symmetry, integrability and geometry: methods and applications PY - 2021 VL - 17 UR - http://geodesic.mathdoc.fr/item/SIGMA_2021_17_a83/ LA - en ID - SIGMA_2021_17_a83 ER -