ΚΟΙΝΩΝΙΚΟ ΠΕΙΡΑΜΑ -ΡΑΤΣΙΣΜΟΣ
https://ixnosdiagrafis.wordpress.com/2013/12/29/%CE%BC%CE%AF%CE%B1-%CF%84%CE%AC%CE%BE%CE%B7-%CF%86%CF%85%CE%BB%CE%B5%CF%84%CE%B9%CE%BA%CE%AC-%CE%B4%CE%B9%CE%B1%CF%87%CF%89%CF%81%CE%B9%CF%83%CE%BC%CE%AD%CE%BD%CE%B7/