Linkify reference (OWASP#462)

Fixes OWASP#335

pages/controls/Static_Code_Analysis.md

@@ -50,15 +50,15 @@ are often derived from compiler technologies.
 ### Data Flow Analysis
 
 Data flow analysis is used to collect run-time (dynamic) information
-about data in software while it is in a static state (Wögerer, 2005).
+about data in software while it is in a static state ([Wögerer, 2005](http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.394.5540)).
 
 There are three common terms used in data flow analysis, basic block
 (the code), Control Flow Analysis (the flow of data) and Control Flow
 Path (the path the data takes):
 
 Basic block: A sequence of consecutive instructions where control enters
 at the beginning of a block, control leaves at the end of a block and
-the block cannot halt or branch out except at its end (Wögerer, 2005).
+the block cannot halt or branch out except at its end ([Wögerer, 2005](http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.394.5540)).
 
 Example PHP basic block:
 
@@ -82,8 +82,7 @@ An abstract graph representation of software by use of nodes that
 represent basic blocks. A node in a graph represents a block; directed
 edges are used to represent jumps (paths) from one block to another. If
 a node only has an exit edge, this is known as an ‘entry’ block, if a
-node only has a entry edge, this is know as an ‘exit’ block (Wögerer,
-2005).
+node only has a entry edge, this is know as an ‘exit’ block ([Wögerer, 2005](http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.394.5540)).
 
 Example Control Flow Graph; ‘node 1’ represents the entry block and
 ‘node 6’ represents the exit block.