@article{MZ_1973__134_171973,
     author = {F. Feh\'er and D. Gaspar and Hans Johnen},
     title = {Der {Konjugiertenoperator} auf rearrangement-invarianten {Funktionenr\"aumen.}},
     journal = {Mathematische Zeitschrift},
     pages = {129--142},
     publisher = {mathdoc},
     volume = {134},
     year = {1973},
     zbl = {0265.46035},
     url = {http://geodesic.mathdoc.fr/item/MZ_1973__134_171973/}
}