TY - JOUR AU - Örn Arnaldsson AU - Francis Valiquette TI - Invariants of Surfaces in Three-Dimensional Affine Geometry JO - Symmetry, integrability and geometry: methods and applications PY - 2021 VL - 17 UR - http://geodesic.mathdoc.fr/item/SIGMA_2021_17_a32/ LA - en ID - SIGMA_2021_17_a32 ER -