@article{Guo2001a,
	title = {Some classes of four-weight spin models},
	author = {Haitao Guo and Tayuan Huang},
	day = {01},
	journal = {Journal of Statistical Planning and Inference},
	month = {Apr},
	number = {2},
	pages = {231--247},
	url = {http://www.sciencedirect.com/science/article/B6V0M-42GDGVM-F/1/36c1ef86728bb17e371926c0e8c9b4bf},
	volume = {94},
	year = {2001},
	biburl = {http://www.bibsonomy.org/bibtex/230dc6ff4fd340714490e0af8e73ea658/smicha},
	keywords = {Four-weight model spin }
}