@article{KYB_2002_38_4_a3,
     author = {M\'arquez-Mart{\'\i}nez, Luis Alejandro and Moog, Claude H. and Velasco-Villa, Mart{\'\i}n},
     title = {Observability and observers for nonlinear systems with time delays},
     journal = {Kybernetika},
     pages = {445--456},
     year = {2002},
     volume = {38},
     number = {4},
     mrnumber = {1937139},
     zbl = {1265.93060},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_2002_38_4_a3/}
}