TY - JOUR AU - Mark Green AU - James Carlson AU - Phillip Griffiths TI - Variations of Hodge Structure Considered as an Exterior Differential System: Old and New Results JO - Symmetry, integrability and geometry: methods and applications PY - 2009 VL - 5 UR - http://geodesic.mathdoc.fr/item/SIGMA_2009_5_a86/ LA - en ID - SIGMA_2009_5_a86 ER -