↑ Robert Simpson (1952). Carl Nielsen, Symphonist, 1865-1931. J. M. Dent. p.145.
↑ Tomi Mäkelä (2011). Jean Sibelius. Boydell Press. p.208. ISBN9781843836889.
↑ Dahlström, Fabian[in Swedish] (2003). Jean Sibelius: Thematisch-bibliographisches Verzeichnis seiner Werke[Jean Sibelius: A Thematic Bibliographic Index of His Works] (in German). Wiesbaden: Breitkopf & Härtel. pp.99–100. ISBN3-7651-0333-0.
↑ Tone Hoemsnes (26 November 2024). "Ola Isene". Store Norsk Lekskicon (in Norwegian). Retrieved 23 February 2025.
↑ Jacobsson, Stig; Peterson, Hans-Gunnar (1988). Swedish composers of the 20th century: members of the Society of Swedish Composers. Stockholm: Swedish Music Information Center. ISBN91-85470-47-3. OCLC21031637.
↑ Liukkonen, Petri. "Zachris Topelius". Books and Writers (kirjasto.sci.fi). Finland: Kuusankoski Public Library. Archived from the original on 21 February 2015. Retrieved 23 February 2025.
↑ Hixon, Donald L. (1993). Women in music: an encyclopedic biobibliography. Don A. Hennessee (2nded.). Metuchen, N.J.: Scarecrow Press. ISBN0-8108-2769-7. OCLC28889156.
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