@article{MZ_1989__202_1_174081,
     author = {J\"oran Bergh},
     title = {Hardy's {Inequality} - {A} {Complement.}},
     journal = {Mathematische Zeitschrift},
     pages = {147--150},
     publisher = {mathdoc},
     volume = {202},
     number = {1},
     year = {1989},
     zbl = {0661.46022},
     url = {http://geodesic.mathdoc.fr/item/MZ_1989__202_1_174081/}
}