@article{MAN_1988__281_4_164433,
     author = {Mauro Nacinovich},
     title = {On {Strict} {Levi} {q-Convexity} and {q-Concavity} on {Domains} with {Piecewise} {Smooth} {Boundaries.}},
     journal = {Mathematische Annalen},
     pages = {459--482},
     publisher = {mathdoc},
     volume = {281},
     number = {4},
     year = {1988},
     zbl = {0628.32021},
     url = {http://geodesic.mathdoc.fr/item/MAN_1988__281_4_164433/}
}