@article {biometrika2006,
	title = {Discriminant analysis with common principal components},
	journal = {Biometrika},
	volume = {93},
	number = {4},
	year = {2006},
	pages = {1018{\textendash}1024},
	doi = {10.1093/biomet/93.4.1018},
	url = {http://doi.org/10.1093/biomet/93.4.1018},
	author = {Zhu, Mu}
}
