--- res/PP-compiler.tex	2009/06/22 14:23:22	1.2
+++ res/PP-compiler.tex	2009/06/24 14:31:51	1.3
@@ -59,6 +59,10 @@ either the ECC protected or the unprotec
 balance energy consumption and reliability \cite{LeeShrivastava09a}.
 The second spills registers to ECC protected memory if the register
 contents are not used for a long period \cite{LeeShrivastava09c}.
+There exist complete software solutions which use different forms
+of code duplications \cite{Reis+05}, which do failure virutalization
+\cite{WapplerMueller08} or which use techniques like control flow
+checking \cite{}
 
 %ADL and Instruction Set Simulators \cite{MishraDutt08}