@article{10_4153_CMB_1965_058_4,
     author = {Datko, Richard},
     title = {A {Generalization} of the {Bang-Bang} {Principle} of {Linear} {Control} {Theory*}},
     journal = {Canadian mathematical bulletin},
     pages = {783--789},
     year = {1965},
     volume = {8},
     number = {6},
     doi = {10.4153/CMB-1965-058-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1965-058-4/}
}