diff --git a/OSS-2017/.gitignore b/OSS-2017/.gitignore
index 1856731..8dc7f29 100644
--- a/OSS-2017/.gitignore
+++ b/OSS-2017/.gitignore
@@ -10,4 +10,7 @@
 *.lot
 *.lof
 *.idx
+*.cls
+*.sty
+*.bst
 *~
diff --git a/OSS-2017/01-introduction.tex b/OSS-2017/01-introduction.tex
index b58e4bd..d2cdb9a 100644
--- a/OSS-2017/01-introduction.tex
+++ b/OSS-2017/01-introduction.tex
@@ -1,8 +1,8 @@
 \section{Introduction}
 \label{sec:intro}
 
-Since last few decades, the Brazilian Federal Government has been improving its software adoption and development processes. In 2003, the recommendation to adopt free software become a public policy. In this context, in 2007, the Brazilian Ministry of Planning, Budget, and Management had released a Portal to share projects like free software called Brazilian Public Software (\textit{Software Público Brasileiro} -- SPB). In short, a website to share softwares developed by and for the Brazilian Government.
+Since last few decades, the Brazilian Federal Government has been improving its software adoption and development processes. In 2003, the recommendation to adopt free software become a public policy. In this context, in 2007, the Brazilian Ministry of Planning, Budget, and Management had released a Portal to share projects like free software called Brazilian Public Software (\textit{Software Público Brasileiro} -- SPB) \footnote{\url{https://softwarepublico.gov.br}}. In short, a website to share softwares developed by and for the Brazilian Government.
 
-On the one hand, the Brazilian legal instrument (IN 04/2012) on software contracting indicates that the public managers must consult the SPB Portal to adopt a software solution, as well as, justifying the acquisition of proprietary softwares if there is no a similar project available in the SPB Portal. On the other hand, since 2009, the SPB Portal had several technical problems because there was no development activities to maintenance and evolute it. Thus, the initial SPB Portal version did not have another release.
+On the one hand, the Brazilian legal instrument (IN MP/SLTI 04/2014) \cite{IN04:2014} on software contracting indicates that the public managers must consult the SPB Portal to adopt a software solution, as well as, justifying the acquisition of proprietary softwares if there is no a similar project available in the SPB Portal. On the other hand, since 2009, the SPB Portal had several technical problems because there was no development activities to maintenance and evolute it. Thus, the initial SPB Portal version did not have another release.
 
 During 2014 and 2016, a platform for the Brazilian Public Software project was designed and developed by the University of Brasília and the University of São Paulo. This new Portal was designed to be an integrated platform of collaborative software development environments with social networking, mailing list, control version system, and source code quality monitoring. In this paper, we present this new generation of the SPB Portal.
diff --git a/OSS-2017/02-platform.tex b/OSS-2017/02-platform.tex
index d0b7b95..7714a66 100644
--- a/OSS-2017/02-platform.tex
+++ b/OSS-2017/02-platform.tex
@@ -56,7 +56,7 @@ evolved in order to keep the navigation unified. With tools from different scope
 in many cases, run features with similar concepts, we have faced with the challenge to 
 develop transparent interface bringing together the various scopes. For each required 
 feature, we often have to conciliate data with distinct strucuture and information pattern 
-from each used tool. The interface was the meeting point for this information with links 
+from each used tool. The graphical user interface was the meeting point for this information with links 
 that users mustn't realize. The common features like display and edition of profile 
 information, search and content have been brought in line with the structure and other 
 existing features of the portal.
diff --git a/OSS-2017/spb.bib b/OSS-2017/spb.bib
index 0a17dd0..c1d964d 100644
--- a/OSS-2017/spb.bib
+++ b/OSS-2017/spb.bib
@@ -35,3 +35,12 @@
   year={2010}
 }
 
+@online{IN04:2014,
+	Org-Short = {MP/SLTI},
+	Organization = {Ministério do Planejamento, Orçamento e Gestão},
+    Title = {Instrução Normativa MP/SLTI nº04/2014},
+    url = {https://www.governoeletronico.gov.br/eixos-de-atuacao/governo/sistema-de-administracao-dos-recursos-de-tecnologia-da-informacao-sisp/ncti-nucleo-de-contratacoes-de-tecnologia-da-informacao/in-4-instrucao-normativa-mp-slti-no-4-2014}
+	Year = {2014},
+	lastchecked = {28.03.2017},
+}
+
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