1 – https://uea.org/kongresoj 
2 - http://www.unesco.org/new/en/culture/themes/endangered-languages/
3 - http://www.linguistic-rights.org/rio/#UNDPINGOBonn
4 - http://terralingua.org/biocultural-diversity/inextricable-links/
5 - http://www.linguistic-rights.org/unesco/Unesko-Rezolucio-Montevideo-1954-114586angla.pdf -

     http://www.linguistic-rights.org/unesco/Unesko-Rezolucio-Montevideo-1954-114586franca.pdf 
6 - http://www.linguistic-rights.org/unesco/Unesko-Rezolucio-Sofio-1985-068427angla.pdf -

      http://www.linguistic-rights.org/unesco/Unesko-Rezolucio-Sofio-1985-068427franca.pdf 

7 - http://www.linguistic-rights.org/esperanto-tago/ 

8 - http://www.lernu.net/ 

9 - https://en.duolingo.com/course/eo/en/Learn-Esperanto-Online

     https://www.duolingo.com/course/eo/es/aprende-esperanto-en-l%C3%ADnea

10 - https://eo.wikipedia.org/
11 - http://www.onb.ac.at/esperantomuseum.htm
12 - http://www.cdeli.org
13 - http://katalogo.uea.org/
14 - http://novajhoj.weebly.com/
15 - http://www.vinilkosmo.com/