Op. 7.1 Step by Step (Etudes for Guitar published by  Schott Verlag

Op. 12.1 Etüden, published ...
Op. 15 Studien für Gitarre, published 'Soundbord' 1989

Op. 32 Missing Alexandra, published by Universal Edition

Gitarrenschule Volume I - III (Ratzkowski/Thomsen)   REBA-Edition
Two Guitars play … (Ratzkowski/Thomsen) REBA-Edition

• Classic I
• Classic II
• Blues & Ragtime
• Latin
• Music from Spain
• Internacional Folksongs
• Scandinavian Folksongs