@article{FORUM_1994__6_3_141751,
     author = {Irene Llerena},
     title = {Wedge cancellation and genus.},
     journal = {Forum mathematicum},
     pages = {547--554},
     publisher = {mathdoc},
     volume = {6},
     number = {3},
     year = {1994},
     zbl = {0821.55008},
     url = {http://geodesic.mathdoc.fr/item/FORUM_1994__6_3_141751/}
}