@article{10_4064_ap_22_3_299_302,
     author = {A. Fitzke},
     title = {On a system of difference inequalities of parabolic type},
     journal = {Annales Polonici Mathematici},
     pages = {299--302},
     publisher = {mathdoc},
     volume = {22},
     number = {3},
     year = {1969},
     doi = {10.4064/ap-22-3-299-302},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-22-3-299-302/}
}