TY - JOUR AU - Jerzy B. Nowak TI - Corrections to "$L_2$ -characteristic classes of Maslov–Trofimov of hamiltonian systems on the Lie algebra of the upper triangular matrices" (Fund. Math. 156 (1998), 99–110) JO - Fundamenta Mathematicae PY - 1999 SP - 197 EP - 198 VL - 160 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-160-2-197-198/ DO - 10.4064/fm-160-2-197-198 LA - en ID - 10_4064_fm_160_2_197_198 ER -