author = { Buxtehude, Dietrich Koopman, Ton },

title = { Vocal works },

publisher = {Challenge},

keywords = { CD },

year = {20XX-},

booktitle = {Opera omnia ; .},

booktitle = {Challenge Classics},

address = { [Hilversum] },

url = { http://slubdd.de/katalog?TN_libero_mab2 }