@book{70076,
	author = {Gray, Andrew, and Mathews, G. B.},
	title = {A treatise on Bessel functions and their applications to physics /},
	publisher = {Macmillan and co.,},
	year = {1952.},
	address = {London :},
	edition = {2d ed. prepared by A. Gray and T. M. MacRobert.}
}