diff --git a/tex/main.bbl b/tex/main.bbl
new file mode 100644
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+++ b/tex/main.bbl
@@ -0,0 +1,25 @@
+\begin{thebibliography}{1}
+
+\bibitem{robust}
+
+
+\bibitem{mirex}
+
+
+\bibitem{hybrid}
+
+
+\bibitem{cuckoo}
+Wenlei Shi and Xinhai Fan.
+\newblock Speech classification based on cuckoo algorithm and support vector
+  machines.
+\newblock {\em 2nd IEEE International Conference on Computational Intelligence
+  and Applications}, 2017.
+
+\bibitem{radio}
+Błażej~Chwiećko Stanisław~Kacprzak and Bartosz Ziółko.
+\newblock Speech/music discrimination for analysis of radio stations.
+\newblock {\em 2017 International Conference on Systems, Signals and Image
+  Processing (IWSSIP)}, 2017.
+
+\end{thebibliography}
diff --git a/tex/main.blg b/tex/main.blg
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+++ b/tex/main.blg
@@ -0,0 +1,82 @@
+This is BibTeX, Version 0.99d (TeX Live 2017/Debian)
+Capacity: max_strings=100000, hash_size=100000, hash_prime=85009
+The top-level auxiliary file: main.aux
+The style file: plain.bst
+Database file #1: cites.bib
+I was expecting a `,' or a `}'---line 22 of file cites.bib
+ : 
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+I'm skipping whatever remains of this entry
+I was expecting a `,' or a `}'---line 25 of file cites.bib
+ : 
+ : title = "ROBUST SPEECH / MUSIC CLASSIFICATION IN AUDIO DOCUMENTS"
+(Error may have been on previous line)
+I'm skipping whatever remains of this entry
+I was expecting a `,' or a `}'---line 32 of file cites.bib
+ : 
+ : title = "METHODS FOR SPEECH / MUSIC DETECTION AND CLASSIFICATION"
+(Error may have been on previous line)
+I'm skipping whatever remains of this entry
+I was expecting a `,' or a `}'---line 39 of file cites.bib
+ : 
+ : title = "Speech/Music Discrimination using Hybrid-Based Feature Extraction for Audio Data Indexing"
+(Error may have been on previous line)
+I'm skipping whatever remains of this entry
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+Warning--empty year in hybrid
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diff --git a/tex/main.pdf b/tex/main.pdf
index 1bbf00a..fac706c 100644
Binary files a/tex/main.pdf and b/tex/main.pdf differ
diff --git a/tex/main.tex b/tex/main.tex
index 2913ce3..0560baf 100644
--- a/tex/main.tex
+++ b/tex/main.tex
@@ -4,7 +4,6 @@
   \geometry{a4paper, top=2.5cm, bottom=2.5cm, left=2.2cm,
     right=2.2cm}
   \usepackage{fontspec}
-  \usepackage{graphicx}
   \usepackage{titlesec}
   \usepackage{titling}
   \usepackage{float}
diff --git a/tex/private b/tex/private
new file mode 100644
index 0000000..e69de29