@article{GDZPPN002218593,
title = {Units from Periodic Jacobi-Perron Algorithms in Algebraic Number Fields of Degree n ...2.},
journal = {Manuscripta mathematica},
volume = {12},
year = {1974},
pages = {249-262},
zbl = {0292.12008},
url = {http://dml.mathdoc.fr/item/GDZPPN002218593}
}
Bernstein, Leon. Units from Periodic Jacobi-Perron Algorithms in Algebraic Number Fields of Degree n ...2.. Manuscripta mathematica, Tome 12 (1974) pp. 249-262. http://gdmltest.u-ga.fr/item/GDZPPN002218593/