Lesson-3.markdown

@@ -12,7 +12,7 @@
 The goal of this exercise is to experiment with the NXT sound sensor and program the LEGO car with sound controlled application.
 
 ## Plan
-The plan is to follow the instructions given in the instructions for Lesson 2 (http://legolab.cs.au.dk/DigitalControl.dir/NXT/Lesson3.dir/Lesson.html)
+The plan is to follow the instructions given in the instructions for Lesson 2 [1].
 
 ## Results
 
@@ -20,3 +20,8 @@ The plan is to follow the instructions given in the instructions for Lesson 2 (h
 ![Figur tekst](http://gitlab.au.dk/uploads/rene2014/lego/d119fc1509/IMG_1348.JPG "Title")
 
 $a + b = c/d$
+
+## Conclusion
+
+## References
+[1] http://legolab.cs.au.dk/DigitalControl.dir/NXT/Lesson3.dir/Lesson.html
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