@article{Xiang1998,
	title = {On reversible abelian Hadamard difference sets},
	author = {Qing Xiang},
	day = {01},
	journal = {Journal of Statistical Planning and Inference},
	month = {Sep},
	number = {1-2},
	pages = {409--416},
	url = {http://www.sciencedirect.com/science/article/B6V0M-3W18XKN-10/1/029c1c6fdc02912e8317ceae850dc55e},
	volume = {73},
	year = {1998},
	biburl = {http://www.bibsonomy.org/bibtex/2cfa5e5bccb72078ac6a41a47ac22ba59/smicha},
	keywords = {Difference set }
}