@article{10_21136_AM_1987_104233,
     author = {Regi\'nska, Teresa},
     title = {Superconvergence of external approximation for two-point boundary problems},
     journal = {Applications of Mathematics},
     pages = {25--36},
     publisher = {mathdoc},
     volume = {32},
     number = {1},
     year = {1987},
     doi = {10.21136/AM.1987.104233},
     mrnumber = {0879327},
     zbl = {0641.65064},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1987.104233/}
}