1. Official site of ClubeNCL. http://clube.ncl.org.br. Official site of ClubeNCL. http://clube.ncl.org.br.
2. Official site of SBTVD. http://www.dtv.org.br 2010. Official site of SBTVD. http://www.dtv.org.br 2010.
3. ABNT. 15606-2. Digital Terrestrial Television - Data Coding and Transmission Specification for Digital Broadcasting - Part 2: Ginga-NCL for fixed and mobile receivers - XML application language for application coding 2011. ABNT. 15606-2. Digital Terrestrial Television - Data Coding and Transmission Specification for Digital Broadcasting - Part 2: Ginga-NCL for fixed and mobile receivers - XML application language for application coding 2011.
4. D. Bulterman G. Grassel J. Jansen A. Koivisto N. Layaida T. Michel S. Mullender and D. Zucker. Synchronized multimedia integration language (smil 2.1). W3C Recommendation 13 2005. D. Bulterman G. Grassel J. Jansen A. Koivisto N. Layaida T. Michel S. Mullender and D. Zucker. Synchronized multimedia integration language (smil 2.1). W3C Recommendation 13 2005.