@article {MR2504015,
	title = {On Z-modules of algebraic integers},
	journal = {Canad. J. Math.},
	volume = {61},
	year = {2009},
	pages = {264{\textendash}281},
	issn = {0008-414X},
	doi = {10.4153/CJM-2009-013-9},
	url = {http://dx.doi.org/10.4153/CJM-2009-013-9},
	author = {Jason P. Bell and Kevin G. Hare}
}
