@article{MZ_1986__193_173792,
     author = {Urban Cegrell},
     title = {Sums of {Continuous} {Plurisubharmonic} {Functions} and the {Complex} {Monge-Amp\`ere} {Operator} in ....n.},
     journal = {Mathematische Zeitschrift},
     pages = {373--380},
     publisher = {mathdoc},
     volume = {193},
     year = {1986},
     zbl = {0624.31004},
     url = {http://geodesic.mathdoc.fr/item/MZ_1986__193_173792/}
}