TY - JOUR AU - János Karátson TI - Gradient method for non-injective operators in Hilbert space with application to Neumann problems JO - Applicationes Mathematicae PY - 1999 SP - 333 EP - 346 VL - 26 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/am-26-3-333-346/ DO - 10.4064/am-26-3-333-346 LA - en ID - 10_4064_am_26_3_333_346 ER -