@article{10_4153_CJM_2003_027_8,
     author = {Zucconi, Francesco},
     title = {Surfaces with pg = q = 2 and an {Irrational} {Pencil}},
     journal = {Canadian journal of mathematics},
     pages = {649--672},
     year = {2003},
     volume = {55},
     number = {3},
     doi = {10.4153/CJM-2003-027-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2003-027-8/}
}