@book{33816,
	author = {Durbin, J. and Koopman, S. J.  and Koopman, S. J.},
	title = {Time series analysis by state space methods},
	publisher = {Oxford University Press,},
	year = {2012},
	address = {Oxford:},
	edition = {2nd},
	note = {"Purchased under NBHM grant for the year 2014-2015"}
}