@article{MAN_1991__290_4_164809,
     author = {F. Campana},
     title = {The class ... is not stable by small deformations.},
     journal = {Mathematische Annalen},
     pages = {19--30},
     publisher = {mathdoc},
     volume = {290},
     number = {4},
     year = {1991},
     zbl = {0722.32014},
     url = {http://geodesic.mathdoc.fr/item/MAN_1991__290_4_164809/}
}