@article{MAN_1973__205_162501,
     author = {Christer Borell},
     title = {Complements of {Lyapunov's} {Inequality.}},
     journal = {Mathematische Annalen},
     pages = {323--332},
     publisher = {mathdoc},
     volume = {205},
     year = {1973},
     zbl = {0248.26011},
     url = {http://geodesic.mathdoc.fr/item/MAN_1973__205_162501/}
}