@book{ 0-1539204952, title = {Violin studies: die 100 wichtigsten Etüden für den Violinunterricht; mittelschwer}, series = {Violinissimo}, author = {Birtel, Wolfgang}, editor = {Birtel, Wolfgang}, address = {Mainz a Rhein}, publisher = {Schott Music}, year = {2016}, language = {German}, url = {https://katalog.hmt-leipzig.de/Record/0-1539204952} }