@book{21874,
	author = {Powell, Richard C.},
	title = {Symmetry, Group Theory, and the Physical Properties of Crystals},
	publisher = {Springer New York},
	year = {2010},
	series = {Lecture Notes in Physics},
	address = {New York},
	url = {http://doi.org/10.1007/978-1-4419-7598-0}
}