Human Factors Engineering : digital teaching tools and paper-free handouts for lecture notesTeichmann, Mare; Ilvest, Jüri jrWSEAS transactions on advances in engineering education2012 / p. 31-41 : ill https://www.researchgate.net/publication/271700519_Human_Factors_Engineering_digital_teaching_tools_and_paper-free_handouts_for_lecture_notes