@article{10_4064_ap_26_3_315_324,
     author = {Tadeusz Rumak},
     title = {On the {\textmu}-observability of some non-linear difference equations},
     journal = {Annales Polonici Mathematici},
     pages = {315--324},
     publisher = {mathdoc},
     volume = {26},
     number = {3},
     year = {1972},
     doi = {10.4064/ap-26-3-315-324},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-26-3-315-324/}
}