found: Muz Zeier, c1985:p. 58 (b. Zurich, Nov. 24, 1929; d. Zurich, 1981; played jazz trombone in the influential Höngg Hot Trester Seven group, 1951-1952)
found: Künstlerverzeichnis der Schweiz, 1980-1990(Zeier, Muz; b. Zurich, Nov. 24, 1929; d. Zurich, Mar. 30,1981; also known as Helmut Viktor Zeier; painter and sculptor)
found: SIKART WWW site, Oct. 12, 2106(Zeier, Muz; b. Zurich, Nov. 24, 1929; d. Zurich, Mar. 30,1981; also known as Helmut Viktor Zeier; painter, draftsman, sculptor, jazz trombonist) - http://www.sikart.ch/KuenstlerInnen.aspx?id=4005654 found: VIAF, Oct. 12, 2015(DNB access point: Zeier, Muz, 1929-1981; variant: Zeier, Helmut Viktor, 1929-1981)
