@article{MS2_1981__48_166747,
     author = {\"Oystein J. R\"odseth},
     title = {On h-bases for n.},
     journal = {Mathematica Scandinavica},
     pages = {165--183},
     publisher = {mathdoc},
     volume = {48},
     year = {1981},
     zbl = {0464.10045},
     url = {http://geodesic.mathdoc.fr/item/MS2_1981__48_166747/}
}