@article{10_4064_cm_27_2_263_268,
     author = {Sam B. Nadler, Jr.},
     title = {Some problems concerning stability of fixed points},
     journal = {Colloquium Mathematicum},
     pages = {263--268},
     publisher = {mathdoc},
     volume = {27},
     number = {2},
     year = {1973},
     doi = {10.4064/cm-27-2-263-268},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-27-2-263-268/}
}