Where can you find information about an Amadeus violin group?

The Amadeus Quartet was a British string quartet that was active from 1947 to 1989. The quartet was founded by Norbert Brainin (violin), Siegmund Nissel (violin), Peter Schidlof (viola), and Martin Lovett (cello). The Amadeus Quartet was known for its interpretations of classical and romantic repertoire, and for its recordings of the complete string quartets of Beethoven and Schubert.

Here are some sources of information about the Amadeus Quartet:

* The website of the Amadeus Quartet: http://www.amadeusquartet.com/

* The Wikipedia article about the Amadeus Quartet: https://en.wikipedia.org/wiki/Amadeus_Quartet

* The Grove Music Online article about the Amadeus Quartet: https://www.oxfordmusiconline.com/grovemusic/view/10.1093/gmo/9781561592630.001.0001/omo-9781561592630-e-0000001529?rskey=1pLhN8&result=1

* The book "The Amadeus Quartet: A Celebration" by Tully Potter: https://www.amazon.com/Amadeus-Quartet-Celebration-Tully-Potter/dp/0195170175