@article{10_4064_cm_18_1_29_35,
     author = {E. C\^ampu and A. Halanay},
     title = {Syst\`emes de commande et \'equations au paratingent \`a retardement},
     journal = {Colloquium Mathematicum},
     pages = {29--35},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {1967},
     doi = {10.4064/cm-18-1-29-35},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-18-1-29-35/}
}