@book{12590,
	author = {Berg, Lothar. },
	title = {Introduction to the operational calculus / },
	publisher = {North-Holland Pub. Co : },
	year = {1967.},
	series = {North-Holland series on applied mathematics and mechanics ; },
	address = {Amsterdam : },
	note = {Translation of Einführung in die Operatorenrechnung.}
}