@article{MM2_1986__54_155117,
     author = {B. Nassapoulos and G. Pantelidids},
     title = {\"Uber die {Existenz} gemeinsamer {Elemente} bester {Approximation} bez\"uglich zweier {Normen.}},
     journal = {Manuscripta mathematica},
     pages = {361--372},
     publisher = {mathdoc},
     volume = {54},
     year = {1986},
     url = {http://geodesic.mathdoc.fr/item/MM2_1986__54_155117/}
}