TY - JOUR AU - Wen, Guo-Chun TI - Oblique derivative problems for second-order hyperbolic equations with degenerate curve JO - Electronic Journal of Differential Equations PY - 2011 VL - 2011 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EJDE_2011__2011__a88/ LA - en ID - EJDE_2011__2011__a88 ER -