@article {deng2004gaussian,
	title = {Gaussian MRF rotation-invariant features for image classification},
	journal = {IEEE transactions on pattern analysis and machine intelligence},
	volume = {26},
	number = {7},
	year = {2004},
	pages = {951{\textendash}955},
	publisher = {IEEE},
	author = {Deng, Huawu and Clausi, David A}
}
