@article{KYB_2001__37_3_a2,
     author = {Louisell, James},
     title = {Delay differential systems with time-varying delay: new directions for stability theory},
     journal = {Kybernetika},
     pages = {[239]},
     publisher = {mathdoc},
     volume = {37},
     number = {3},
     year = {2001},
     mrnumber = {1859083},
     zbl = {1265.93221},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_2001__37_3_a2/}
}