rhs_ref            80 src/secOrd_op_brusselator.cpp   const FE_function& rhs_ref = rhs;
rhs_ref            82 src/secOrd_op_brusselator.cpp   d_ptr -> bruss_cg(rhs_ref, lhs_ref);
rhs_ref            88 src/secOrd_op_brusselator.cpp   const FE_function& rhs_ref = rhs;
rhs_ref            90 src/secOrd_op_brusselator.cpp   d_ptr -> bruss_op.mass_matrix(rhs_ref, lhs_ref);
rhs_ref           128 src/secOrd_op_brusselator.cpp   const FE_function& rhs_ref = rhs;
rhs_ref           110 src/secOrd_op_linearHeat.cpp   const FE_function& rhs_ref = rhs;
rhs_ref           112 src/secOrd_op_linearHeat.cpp   d_ptr -> heat_op.mass_matrix(rhs_ref, lhs_ref);