@article{bwmeta1.element.bwnjournal-article-aav22i1p11bwm,
author = {Spears, Nina},
title = {A problem involving simultaneous binary compositions},
journal = {Acta Arithmetica},
volume = {21},
year = {1972},
pages = {11-20},
zbl = {0251.10006},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav22i1p11bwm}
}
Spears, Nina. A problem involving simultaneous binary compositions. Acta Arithmetica, Tome 21 (1972) pp. 11-20. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav22i1p11bwm/