@article{AM2_1990__40_1_137365,
     author = {A.W. Marshall and I. Olkin},
     title = {Matrix versions of the {Cauchy} and {Kantorovich} inequalities.},
     journal = {Aequationes mathematicae},
     pages = {89--93},
     publisher = {mathdoc},
     volume = {40},
     number = {1},
     year = {1990},
     zbl = {0706.15019},
     url = {http://geodesic.mathdoc.fr/item/AM2_1990__40_1_137365/}
}