@article{10_4064_ap_31_2_121_129,
     author = {A. Fitzke},
     title = {Method of difference inequalities for parabolic equations with mixed derivatives},
     journal = {Annales Polonici Mathematici},
     pages = {121--129},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {1975},
     doi = {10.4064/ap-31-2-121-129},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-31-2-121-129/}
}