Security studies

Articles in SafetyLit
Y-Axis = Volume :: X-Axis = Issue
?=unknown status :: X=no issue published :: nn=articles from issue :: A=relevant article(s) IDed to add
S=searched, nothing relevant :: O=issue published but not yet searched :: C=combination issue

	1	2	3	4

14 (2005)	1	?	?	?
16 (2007)	?	1	?	?
18 (2009)	?	1	?	?
20 (2011)	?	1	1	?
21 (2012)	1	?	?	?
22 (2013)	?	1	?	2
23 (2014)	2	1	1	?
25 (2016)	?	?	1	?
30 (2021)	1	?	?	?