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Books about Demantius:
Kalmus Study Scores No. 881: German Composers of the 16th and Early 17th Century; Gallus, Hassler, Hahnel, Demantius... by Various (1968)
BAROQUE MUSIC FOR RECORDERS VINTAGE RECORD ALBUM STEREO H-71064 E. WIDMANN AND C. DEMANTIUS DANCES, J.B. LOEILLET... by Edward Tatnall, Mathieses, A. H. , Mathiesen, I. K. Canby (1970)
JOHN PASSION / GEORGE GREEN by CHRISTOPH DEMANTIUS [Korean Imported] (2011) by CHRISTOPH DEMANTIUS (0100)
VESPERS FOR Whitsun / PAUL VAN NEVEL [D `FIRST MUSIC] by CHRISTOPH DEMANTIUS [Korean Imported] (2012) by CHRISTOPH DEMANTIUS (0100)
Wiki information Demantius:
Johann Christoph Demantius was a German composer, music theorist, writer and poet. He was an exact contemporary of Monteverdi, and represented a transitional phase in German Lutheran music from the polyphonic Renaissance style to the early Baroque.