@article{MAN_1981__258_163580,
     author = {W. Barth},
     title = {Irreducibility of the {Space} of {Mathematical} {Instanton} {Bundles} with {Rank} 2 and c2 = 4.},
     journal = {Mathematische Annalen},
     pages = {81--106},
     publisher = {mathdoc},
     volume = {258},
     year = {1981},
     zbl = {0477.14014},
     url = {http://geodesic.mathdoc.fr/item/MAN_1981__258_163580/}
}