@article{JAC_2013__38_2_a9,
     author = {Cossidente, Antonio},
     title = {Relative hemisystems on the {Hermitian} surface},
     journal = {Journal of Algebraic Combinatorics},
     pages = {275--284},
     publisher = {mathdoc},
     volume = {38},
     number = {2},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2013__38_2_a9/}
}