@article{JEMS_2007_9_4_a3,
     author = {Fabrizio Catanese and Fabio Tonoli},
     title = {Even sets of nodes on sextic surfaces},
     journal = {Journal of the European Mathematical Society},
     pages = {705--737},
     publisher = {mathdoc},
     volume = {9},
     number = {4},
     year = {2007},
     doi = {10.4171/jems/94},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/94/}
}