@article{RCM_1987__21_1_181787,
     author = {Wolfgang J. B\"uhler},
     title = {Two {Proofs} {Of} {The} {Kantorovich} {Inequality} {And} {Some} {Generalizations.}},
     journal = {Revista colombiana de matematicas},
     pages = {147--154},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {1987},
     zbl = {0656.60030},
     url = {http://geodesic.mathdoc.fr/item/RCM_1987__21_1_181787/}
}