@article{GDZPPN002354098,
title = {Ward's Staut-Clausen problem.},
journal = {Mathematica Scandinavica},
volume = {38},
year = {1976},
pages = {239-250},
zbl = {0347.10010},
url = {http://dml.mathdoc.fr/item/GDZPPN002354098}
}
Horadam, A.F.; Shannon, A.G. Ward's Staut-Clausen problem.. Mathematica Scandinavica, Tome 38 (1976) pp. 239-250. http://gdmltest.u-ga.fr/item/GDZPPN002354098/