@article{KYB_1985_21_1_a6,
     author = {Balachandran, K. and Somasundaram, D.},
     title = {Relative controllability of nonlinear systems with time varying delays in control},
     journal = {Kybernetika},
     pages = {65--72},
     year = {1985},
     volume = {21},
     number = {1},
     mrnumber = {788670},
     zbl = {0558.93008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1985_21_1_a6/}
}