Оригинал: Sevcik, Otakar. Part I. General Introduction. Part X. The Chord of the Dominant Seventh in All Keys. Op.11. Sevcik, Otakar.
Перевод: Sevcik, Отакар. School of Intonation on an Harmonic Basis for Violin. Sevcik, Отакар. Violin solo. Part IIa. The Semitone and Tritone.
