@article{JRAM_1974__0268_0269_151482,
     author = {Leon Bernstein},
     title = {Fundamental units from the perperiod of a generalized {Jacobi-Perron} algorithm.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {391--409},
     publisher = {mathdoc},
     volume = {0268_0269},
     year = {1974},
     zbl = {0286.12005},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1974__0268_0269_151482/}
}