@article{MAN_1985__273_164054,
     author = {Christian Okonek},
     title = {A {Comparison} {Theorem.}},
     journal = {Mathematische Annalen},
     pages = {271--276},
     publisher = {mathdoc},
     volume = {273},
     year = {1985},
     zbl = {0562.14002},
     url = {http://geodesic.mathdoc.fr/item/MAN_1985__273_164054/}
}