1st Newsletter
https://esen.ios.edu.pl/images/Newsletter/1st_Newsletter_PL.pdf
2nd Newsletter
https://esen.ios.edu.pl/images/Newsletter/2nd_Newsletter_PL.pdf
3rd Newsletter
https://esen.ios.edu.pl/images/Newsletter/3rd_Newsletter_PL.pdf
4th Newsletter
https://esen.ios.edu.pl/images/Newsletter/4th_Newsletter_PL.pdf
5th Newsletter
https://esen.ios.edu.pl/images/Newsletter/5th_Newsletter_PL.pdf