@book{47826,
	author = {Borovkov, Aleksandr Alekseevich and Borovkov, K. A.},
	title = {Asymptotic analysis of random walks :},
	publisher = {Cambridge University Press,},
	year = {2008},
	series = {Encyclopedia of mathematics and its applications ;},
	address = {Cambridge ;},
	url = {http://www.loc.gov/catdir/toc/fy0805/2008298018.htm}
}