1. Amazon Europe Core S.à r.l.2019. Amazon.de: Essen & trinken: Alexa Skills. Amazon Europe Core S.à r.l. https://www.amazon.de/s?bbn=10068461031&rh=n%3A10068460031%2Cn%3A%2110068461031%2Cn%3A10536643031&dc&fst=as%3Aoff&qid=1553770362&rnid=10068461031&ref=lp_10068460031_nr_n_2 Amazon Europe Core S.à r.l.2019. Amazon.de: Essen & trinken: Alexa Skills. Amazon Europe Core S.à r.l. https://www.amazon.de/s?bbn=10068461031&rh=n%3A10068460031%2Cn%3A%2110068461031%2Cn%3A10536643031&dc&fst=as%3Aoff&qid=1553770362&rnid=10068461031&ref=lp_10068460031_nr_n_2
2. Music, Search, and IoT
3. Put That Where? Voice and Gesture at the Graphics;Billinghurst Mark;Interface. Comput. Graph.,1998
4. Virginia Braun and Victoria Clarke . 2006. Using thematic analysis in psychology. Qualitative research in psychology 3, 2 ( 2006 ), 77–101. Virginia Braun and Victoria Clarke. 2006. Using thematic analysis in psychology. Qualitative research in psychology 3, 2 (2006), 77–101.
5. Michael Burmester , Katharina Zeiner , Katharina Schippert , and Axel Platz . 2019 . Creating Positive Experiences with Digital Companions. In Extended Abstracts of the 2019 CHI Conference on Human Factors in Computing Systems (Glasgow, Scotland Uk) (CHI EA ’19) . Association for Computing Machinery, New York, NY, USA, 1–6. https://doi.org/10.1145/3290607.3312821 Michael Burmester, Katharina Zeiner, Katharina Schippert, and Axel Platz. 2019. Creating Positive Experiences with Digital Companions. In Extended Abstracts of the 2019 CHI Conference on Human Factors in Computing Systems (Glasgow, Scotland Uk) (CHI EA ’19). Association for Computing Machinery, New York, NY, USA, 1–6. https://doi.org/10.1145/3290607.3312821