@article{MAN_1983__262_163713,
     author = {Marc Levine},
     title = {Stability of {Irrational} {Ruled} {Threefolds.}},
     journal = {Mathematische Annalen},
     pages = {391--406},
     publisher = {mathdoc},
     volume = {262},
     year = {1983},
     zbl = {0488.14008},
     url = {http://geodesic.mathdoc.fr/item/MAN_1983__262_163713/}
}