Monograph about Free Software in Upgrade magazine

Upgrade has just published its monograph about Free Software. UPGRADE is the European Journal for the Informatics Professional, published bimonthly electronically. We have written a paper published on that magazine, and it is available here. The paper covers our study on the source code of the Debian 3.1 GNU/Linux system, one of the most popular and biggest Linux distributions in existence. In some weeks a spanish printed version will be available to ATI members. In the meanwhile, you can download here a spanish draft.