@article{10_4064_ap_11_3_237_245,
     author = {C. Olech},
     title = {A connection between two certain methods of successive approximations in differential equations},
     journal = {Annales Polonici Mathematici},
     pages = {237--245},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1961},
     doi = {10.4064/ap-11-3-237-245},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-11-3-237-245/}
}