@article{10_4064_ap_42_1_125_138,
     author = {Jacek Kaczmarczyk},
     title = {The difference method for non-linear elliptic differential equations with mixed derivatives},
     journal = {Annales Polonici Mathematici},
     pages = {125--138},
     publisher = {mathdoc},
     volume = {42},
     number = {1},
     year = {1983},
     doi = {10.4064/ap-42-1-125-138},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-42-1-125-138/}
}