- Audio cassette tape inventor Lou Ottens dies aged 94 https://www.bbc.com/news/world-europe-56355444 10 comments worldnews
- Dutch inventor of the cassette tape, Lou Ottens has died aged 94 https://www.dutchnews.nl/news/2021/03/dutch-inventor-of-the-audio-cassette-tape-dies-aged-94/#:~:text=lou%20ottens%2C%20inventor%20of%20the,working%20for%20philips%20in%201952. 3 comments technology