@article{10_4064_ap_50_1_1_10,
     author = {Krystyna Szafraniec},
     title = {A difference method for a system of second order ordinary differential equations},
     journal = {Annales Polonici Mathematici},
     pages = {1--10},
     publisher = {mathdoc},
     volume = {50},
     number = {1},
     year = {1989},
     doi = {10.4064/ap-50-1-1-10},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-50-1-1-10/}
}