http://learningdisabilities.about.com/od/emotionalhealth/tp/cyberbullying.htm
https://cyberbullying.org/bullying-students-with-disabilities-and-federal-law
http://teachingall.blogspot.com/2010/04/edtech-blog-swap-digital-citizenship.html
http://abilitypages.ning.com/
http://www.washington.edu/doit/Brochures/Programs/pals.html
http://www.safesurfingkids.com/international_internet_safety_reporting.htm
http://www.mypolice.ca/cyber_safety.html
Spain https://www.ciberbullying.com
EU Kids Online: Digital Literacy and Safety Skills http://www.lse.ac.uk/media@lse/research/EUKidsOnline/EU%20Kids%20II%20(2009-11)/EUKidsOnlineIIReports/DigitalSkillsShortReport.pdf
Cyberbullying definition among adolescents: A comparison across six European countries: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3443335/