@article{10_4064_ap_36_2_123_137,
     author = {Stanis{\l}aw {\L}ojasiewicz, Jr.},
     title = {Some properties of accessible sets in non-linear control systems},
     journal = {Annales Polonici Mathematici},
     pages = {123--137},
     publisher = {mathdoc},
     volume = {36},
     number = {2},
     year = {1979},
     doi = {10.4064/ap-36-2-123-137},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-36-2-123-137/}
}