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von Steiger, Adrian (2023). Cornet by Antoine Courtois ITG Journal, p. 30. International Trumpet Guild
von Steiger, Adrian; Klaus, Sabine K. (June 2019). Büchel (wound alphorn) International Trumpet Guild Journal Crane school of Music
von Steiger, Adrian (2018). Natural trumpet and valve trumpet by Antoine Courtois, Paris, 1852 – 1856 International Trumpet Guild Journal, 42(3), pp. 52-53. Crane school of Music
von Steiger, Adrian (2018). Valve trumpet in low E-flat by Hirsbrunner, Sumiswald (Switzerland, near Bern), 1829 International Trumpet Guild Journal, 42(2), pp. 38-39. Crane school of Music