@article{2039,
author = {Laffey, Thomas J.},
title = {On a question of Hills concerning co-transposers},
journal = {Portugaliae mathematica},
volume = {43},
year = {1985},
pages = {179-187},
zbl = {0591.15006},
mrnumber = {0875066},
language = {en},
url = {http://dml.mathdoc.fr/item/2039}
}
Laffey, Thomas J. On a question of Hills concerning co-transposers. Portugaliae mathematica, Tome 43 (1985) pp. 179-187. http://gdmltest.u-ga.fr/item/2039/