In the website socioeco.org, there is a keyword “The Commons” that collects a whole set of documents and videos, you will find below a few examples :

More than 20 publications, as:

Videos

Case studies

Papers

Articles

 

But also

The wiki list of the P2P Foundation: What tou should read to understand the Commons and their Introduction to Commons Economics.

For your information, you will find here the article The Tragedy of the Commons, by Garrett Hardin, 1968.

 

NOTE: don’t hesitate to consult this same article in French and Spanish, as the resources mentionned are different.