Journal Impact Factor

Cites in 2011 to items published in:	2010 =	46		Number of items published in:	2010 =	237
	2009 =	51			2009 =	224
	Sum:	97			Sum:	461

Calculation:	Cites to recent items	97	=	0.210
	Number of recent items	461

5-Year Journal Impact Factor

Cites in {2011} to items published in:	2010 =	46		Number of items published in:	2010 =	237
	2009 =	51			2009 =	224
	2008 =	40			2008 =	214
	2007 =	32			2007 =	213
	2006 =	18			2006 =	196
	Sum:	187			Sum:	1084

Calculation:	Cites to recent items	187	=	0.173
	Number of recent items	1084

Journal Immediacy Index

Cites in 2011 to items published in 2011	=	24
Number of items published in 2011	=	227

Calculation:	Cites to current items	24	=	0.106
	Number of current items	227

Breakdown of the citations to the journal by the cumulative percent of 2011 cites to items published in the following years:

Cited Year	2011	2010	2009	2008	2007	2006	2005	2004	2003	2002	2001-all
# Cites from 2011	24	46	51	40	32	18	6	5	6	4	148
Cumulative %	6.32	18.42	31.84	42.37	50.79	55.53	57.11	58.42	60.00	61.05	100