@article{MS2_1980__47_166721,
     author = {Torleiv Klove},
     title = {A class of symmetric 2-bases.},
     journal = {Mathematica Scandinavica},
     pages = {177--180},
     publisher = {mathdoc},
     volume = {47},
     year = {1980},
     zbl = {0464.10044},
     url = {http://geodesic.mathdoc.fr/item/MS2_1980__47_166721/}
}