@article{MM2_1985__50_155057,
     author = {H. Azad},
     title = {Levi-Curvature of {Manifolds} with a {Stein} {Rational} {Fibration.}},
     journal = {Manuscripta mathematica},
     pages = {269--312},
     publisher = {mathdoc},
     volume = {50},
     year = {1985},
     zbl = {0577.32013},
     url = {http://geodesic.mathdoc.fr/item/MM2_1985__50_155057/}
}