@article{KYB_1999_35_4_a1,
     author = {Zeheb, Ezra},
     title = {Robust stability of non linear time varying systems},
     journal = {Kybernetika},
     pages = {415--428},
     year = {1999},
     volume = {35},
     number = {4},
     mrnumber = {1723522},
     zbl = {1274.93224},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1999_35_4_a1/}
}