@article {Vok1989,
	title = {Matching factor structures using orthogonal rotation to congruence},
	journal = {Behavior Research Methods, Instruments, \& Computers},
	volume = {21},
	number = {1},
	year = {1989},
	pages = {84{\textendash}85},
	publisher = {Springer},
	author = {Vokey, John R}
}
