Verification of new electronic technical textbooks in the current school

ŽÁČOK, Ľubomír - BERNÁT, Milan - BERNÁTOVÁ, Renáta. Verification of new electronic technical textbooks in the current school. In Ad Alta : journal of interdisciplinary research. - Hradec Králové : Magnanimitas, 2019. ISSN 1804-7890, 2019, vol. 9, no. 2, pp. 371-375. Dostupné na internete: <http://www.magnanimitas.cz/ADALTA/0902/papers/A_zacok.pdf>