pyafm/conclusions.tex: Mention materassi09 and aioanei11 as alternatives

diff --git a/src/pyafm/conclusions.tex b/src/pyafm/conclusions.tex
index 8e044f2f864488cec87dfe73f6f480c658469eaa..9a119a2eb4a33ee77297b9a7fcd1295fbacb34b6 100644 (file)
--- a/src/pyafm/conclusions.tex
+++ b/src/pyafm/conclusions.tex
@@ -36,3 +36,10 @@ used in \cref{sec:pyafm:discussion} to characterize and validate your
 apparatus.  A common stack also provides a common file format for
 experimental data, which makes it easier to share data and analysis
 tools.
+
+While there have been other attempts SMFS control which claim to be
+open source, they have either been based on closed source
+tools\citep{aioanei11} or have (critically) not actually published
+their source\citep{materassi09}.  Both of these limitations make it
+hard to realize the benefits of communal, open source development, and
+the \pyafm\ stack suffers from neither.