Musicology

• Bandoneon und Konzertina, Maria Dunkel (in German)
  Berliner Musikwissenschaftliche Arbeiten,
  Musikverlag Emil Katzbichler, München / Salzburg, 1987 (now newer edition)
  ISBN 3-87397-070-8
• El Bandoneón en el Tango, Oscar D. Zucchi (in Spanish)
  La Historia del Tango, tomo V, El Bandoneón,
  Ediciones Corregidor, Buenos Aires, 1977
  You may try to get it at Yenny.com on-line book store.
• Bandoneon in Uruguay, Maria Dunkel (in german)
  private edition, Lenzburg / Berlin, 1994
• Bandoneon Pure - Dances of Uruguay SF 40431
  80 page CD-booklet with a translated extract of Bandoneon in Uruguay by Maria Dunkel
  Smithsonian Folkways - Traditional Music of the World 5
  Smithsonian / Folkways Recordings
  Office of Folklife Programs
  955 L'Enfant Plaza, Suite 2600
  Smithsonian Institution
  Washington, DC 20560
  
• Akkordeon, Bandonion, Concertina im Kontext der Harmonikainstrumente
  Maria Dunkel (German)
  , 1999, Ralf Kaupenjohann, Bleckstrasse 1a, D-44809 Bochum
  ISBN 3-924272-05-0
• The Bandoneon
  Arturo Penón / Javier García Méndez
• Der Musikwinkel und die Harmonika
  Kurt Kauert (German)
  Druck-und Verlagsgesellschaft Marienberg mbH
  ISBN 3-931770-28-1
• Meantone is beautiful! - Studies on Tuning of Musical Instruments. Reinhard Frosch,
  Bern, Berlin, Bruxelles, Frankfurt/M., New York, Oxford, Wien, 2002. 254 pp., num. fig. and tables;
  154 exercises with solutions.
  ISBN 3-906769-92-5 / US-ISBN 0-8204-5927-5 pb.
  Peter Lang AG
  European Academic Publishers
  Moosstrasse 1, P.O. Box 350
  CH-2542 Pieterlen / Switzerland