TY - JOUR AU - Nigel J. Hitchin TI - Spinors, Twistors and Classical Geometry JO - Symmetry, integrability and geometry: methods and applications PY - 2021 VL - 17 UR - http://geodesic.mathdoc.fr/item/SIGMA_2021_17_a89/ LA - en ID - SIGMA_2021_17_a89 ER -