@article{JAC_2007__26_4_a2,
     author = {Fujiwara, Yuichiro},
     title = {Nonexistence of sparse triple systems over abelian groups and involutions},
     journal = {Journal of Algebraic Combinatorics},
     pages = {495--506},
     publisher = {mathdoc},
     volume = {26},
     number = {4},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2007__26_4_a2/}
}