@article{RLIN_1990_9_1_4_a7,
     author = {Tonolo, Alberto},
     title = {On global controllability of linear time dependent control systems},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni},
     pages = {329--333},
     publisher = {mathdoc},
     volume = {Ser. 9, 1},
     number = {4},
     year = {1990},
     zbl = {0732.93034},
     mrnumber = {513642},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLIN_1990_9_1_4_a7/}
}