Handstilar och Notpikturer i Kungl. Musikaliska Akademiens Roman-Samling. Handwriting and musical calligraphy in the J.H.-Roman-collection of the Swedish Royal Academy of Music. With an English summary. [Illustrated.]
Bengtsson, Ingmar.
Danielson, Ruben.
Uppsala, 
1955.
Joint authors: Ingmar Bengtsson and Ruben Danielson.