The Wayback Machine - https://web.archive.org/web/20200622161452/https://eclass.uoa.gr/modules/document/file.php/PSPA154/%CE%9D%CE%B9%CE%BA%CE%BF%CE%BB%CE%B1%CE%BA%CF%8C%CF%80%CE%BF%CF%85%CE%BB%CE%BF%CF%82%20%CE%97%CE%BB%CE%AF%CE%B1%CF%82%2C%20%CE%9F%CE%B9%20%CE%B5%CE%BA%CE%BB%CE%BF%CE%B3%CE%AD%CF%82%201910%20-%201920_%CE%95%CE%BB%CE%B5%CF%85%CE%B8%CE%AD%CF%81%CE%B9%CE%BF%CF%82%20%CE%92%CE%B5%CE%BD%CE%B9%CE%B6%CE%AD%CE%BB%CE%BF%CF%82%20%CE%B1%CF%80%CF%8C%20%CF%84%CE%BF%20%CE%B8%CF%81%CE%AF%CE%B1%CE%BC%CE%B2%CE%BF%20%CF%83%CF%84%CE%B7%CE%BD%20%CE%AE%CF%84%CF%84%CE%B1.pdf