Оригинал: Schradieck, Henry. Exercises for Promoting Dexterity in the Various Positions. School of Violin Technics. Schradieck, Henry. Book 1.
Превод: Schradieck, Хенри. Училище на Violin Technics. Schradieck, Хенри. Violin solo. Книга 2. Exercises in Double Stops. Книга 3.