In 1985 Xiao Gang proved that the bicanonical surface of a complex surface S of general type with p2(S) > 2 is not composed of a pencil. In this note a new proof of this theorem is presented.
@article{urn:eudml:doc:44327, title = {A note on a theorem of Xiao Gang.}, journal = {Collectanea Mathematica}, volume = {55}, year = {2004}, pages = {33-36}, zbl = {1073.14056}, mrnumber = {MR2028179}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:44327} }
Mendes Lopes, Margarita. A note on a theorem of Xiao Gang.. Collectanea Mathematica, Tome 55 (2004) pp. 33-36. http://gdmltest.u-ga.fr/item/urn:eudml:doc:44327/