Nonstandard mixed finite element methods for partial differential equations 并列题名:Nonstandard mixed finite element methods for partial differential equations Finite element methods for partial differentio-integral equations 并列题名:Finite element methods for partial differentio-integral equations Control and inverse problems for partial differential equations Application of symmetry methods to partial differential equations Finite element methods for stochastic partial differential equations 并列题名:Application of symmetry methods to partial differential equations 并列题名:Finite element methods for stochastic partial differential equations Inverse problems for partial differential equations