1. Aberšek, B., & Kordigel Aberšek, M. (2011). Does intelligent e-learning tools need more pedagogical methodology or ICT. Problems of Education in the 21st Century, 37, 9-17. http://www.scientiasocialis.lt/pec/node/633
2. EqsQest. (2017). Symolab. https://www.symbolab.com/
3. Joyce, A., & Dzoga, M. (2012, januar 1). Ingenious. Intel White Paper: Science, technology, engineering and mathematics education: Overcoming challenges in Europe. https://www.researchgate.net/publication/284023476_Intel_White_Paper_Science_technology_engineering_and_mathematics_education_-_overcoming_challenges_in_Europe
4. MIZŠ. (2007). Katalog znanja – matematika [Catalog of knowledge - mathematics]. http://portal.mss.edus.si/msswww/programi2009/programi/drugi_del/Ssi/KZ-IK/KZ_MAT_SSI_383_408.pdf
5. Mohorčič, A., Pustovrh, S., Škrlec, M., Kapus, H., Zmazek, V., Jericijo, O., & Rauter Repija, I. Vega 1. i-učbenik za matematiko v 1. letniku gimnazij [Vega 1st i-textbook for mathematics in the 1st year of high schools]. Slovenia. http://eucbeniki.sio.si/vega1/