@article{MS2_1964__14_165866,
     author = {Gert Almkvist},
     title = {Stability of {Linear} {Differential} {Equations} in {Banach} {Algebras.}},
     journal = {Mathematica Scandinavica},
     pages = {39--44},
     publisher = {mathdoc},
     volume = {14},
     year = {1964},
     url = {http://geodesic.mathdoc.fr/item/MS2_1964__14_165866/}
}