TY - JOUR AU - Sun, Jianzhong TI - An equation for the limit state of a superconductor with pinning sites JO - Electronic journal of differential equations PY - 2005 VL - 2005 UR - http://geodesic.mathdoc.fr/item/EJDE_2005__2005__a99/ LA - en ID - EJDE_2005__2005__a99 ER -