TY - JOUR AU - Michael Eastwood TI - Higher symmetries of the Laplacian JO - Annals of mathematics PY - 2005 SP - 1645 EP - 1665 VL - 161 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4007/annals.2005.161.1645/ DO - 10.4007/annals.2005.161.1645 LA - en ID - 10_4007_annals_2005_161_1645 ER -