@book{7590,
	author = {Pol, Balthasar van der, and Bremmer, H.,},
	title = {Operational calculus based on the two-sided Laplace integral /},
	publisher = {University Press,},
	year = {1955.},
	address = {Cambridge [Eng.] :},
	edition = {2d ed.},
	note = {Includes index.}
}