https://issuu.com/soultech/docs/study_of_concerto_sacro_by_lothar_klein_-_mark_neu
Study of Concerto Sacro by Lothar Klein - Mark Neumann 1995 by Lothar Klein - Issuu
Five Canadian viola concertos of the 1980's : an analytical study and performance guide by Mark Neumann, Princeton University Library
concerto sacrostudy
https://concertodautunno.blogspot.com/2013/06/20130615-concerto-sacro-del-coro.html
Musica, spettacolo, cultura: 2013_06_15 Concerto sacro del Coro Vallongina a Castell'arquato
Sabato 15 giugno 2013_06_15 ore 21.00 CHIESA DI S.ANTONIO in Costa Orzata (Castell'arquato) CORO E ORCHESTRA VALLONGINA in ALTO E GLORIO...