\input zb-basic \input zb-ioport \iteman{io-port 50302679} \itemau{Wang, Peiguang; Li, Ping} \itemti{Kth order convergence for a semilinear elliptic boundary value problem in the divergence form} \itemso{Applied Mathematics and Computation 217, No. 21, 8547-8551 (2011).} \itemcc{} \itemut{} \itemli{doi:10.1016/j.amc.2011.03.059} \end