@article{MS2_1967__21_166016,
     author = {Jaak Peetre and Vidar Thom\'ee},
     title = {On the {Rate} of {Convergence} for {Discrete} {Initial-Value} {Problems.}},
     journal = {Mathematica Scandinavica},
     pages = {159--176},
     publisher = {mathdoc},
     volume = {21},
     year = {1967},
     zbl = {0172.13902},
     url = {http://geodesic.mathdoc.fr/item/MS2_1967__21_166016/}
}