@article{CMH_1954__28_139079,
     author = {Walter Gautschi},
     title = {\"Uber eine {Klasse} von linearen {Systemen} mit konstanten {Koeffizienten.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {186--196},
     publisher = {mathdoc},
     volume = {28},
     year = {1954},
     zbl = {0058.33506},
     url = {http://geodesic.mathdoc.fr/item/CMH_1954__28_139079/}
}