Otakar Ševcík: Trill Studies And The Development Of Double-Stopping Op. 7
Ševcík's complete works cover every area of Violin technique, from the elementary level and special exercises on individual technical problems all the way to analytical studies of the standard Violin concertos. His "Preparatory Trill Studies" deal with the placement of the fingers, their pressure on the strings and their action on the fingerboard in elementary positions, proceeding from slow movements to trills.
This edition is essentially based on the original print published at the outset of the 20th century, along with other sources from Ševcík's posthumous papers. The editor, Jaroslav Foltýn, is a professor of Violin at Prague Conservatory, as was Ševcík himself.