@article{10_4064_ap_35_3_305_312,
     author = {J. Kloch},
     title = {A necessary and sufficient condition for normality of linear control system with delays},
     journal = {Annales Polonici Mathematici},
     pages = {305--312},
     publisher = {mathdoc},
     volume = {35},
     number = {3},
     year = {1977},
     doi = {10.4064/ap-35-3-305-312},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-35-3-305-312/}
}