found: Haydn, J. Quartet in C, op. 76, no. 3 [SR] 1953.
found: Snowman, D. The Amadeus Quartet, 1981: t.p. (Amadeus Quartet) p. 33 (facsim. of concert poster, July 13, 1947: Brainin String Quartet) p. 35 (renamed Amadeus because Norbert Brainin was not well known, and non-personal names for string quartets were in fashion) p. 36 (facsim. of poster for first concert as Amadeus Quartet, Jan. 10, 1948: Amadeus String Quartet) p. 52 (Strunen kvartet "Amadeus") p. 102 (Quartetto Amadeus)
found: Mozart, W.A. Eine kleine Nachtmusik [SR] 1984?, p1980: label (Amadeus-Quartett) container (Norbert Brainin, Siegmund Nissel, violins; Peter Schidlof, viola; Martin Lovett, violoncello)
found: British music ybk., 1977-78: p. 482 (Amadeus String Quartet)
found: New Grove (Amadeus Quartet; English string quartet, founded 1947)
found: Jacobs, A. Penguin dict. of musical performers, 1991 (Amadeus Quartet; British string quartet; founded 1947, disbanded 1987)
found: Dict. des interprètes, 1995 (Quatuor Amadeus; founded 1947, disbanded 1987)
found: Schubert, F. Quinteto [SR] p1977: container (Cuarteto Amadeus)