https://comserv.cs.ut.ee/ati_thesis/ datasheet.php?id=25391&year=0
https://comserv.cs.ut.ee/ati_thesis/ datasheet.php?id=29231&year=0
https://comserv.cs.ut.ee/ati_thesis/ datasheet.php?id=1791&year=0
https://comserv.cs.ut.ee/ati_thesis/ datasheet.php?id=40951&year=0
http://www.legoengineering.com/ alternative-programming-languages/
https://koolielu.ee/waramu/view/1-cfa9c41f-1442-4fa1-87fd-16d0b37b1f4d
https://koolielu.ee/waramu/view/1-eaaa57de-336d-4f9b-8bba-d6cb203cea85
https://www.etag.ee/wp-content/uploads/2016/01/Robootika-ringi-t%C3%B6%C3%B6plaan-1.pdf
"TOETAS EESTI RIIK"
Estonian