https://sciendo.com/downloadpdf/journals/ctra/6/1/article-p77.pdf
https://moodle.lnu.se/pluginfile.php/7137594/mod_book/chapter/405433/Att%20ta%20undervisningen%20in%20pa%CC%8A%20na%CC%88tet%20%281%29.pdf
att undervisa