A handbook of late spoken Manx.

Rockel (Martin) [Ed.], Zimmer (Stefan) [Ed.]: Akten des Ersten Symposiums deutschsprachiger Keltologen: (Gosen bei Berlin, 8. – 10. April 1992).

Mac Coisdealbha (Pádraig), Isaac (Graham R.) [Ed.]: The syntax of the sentence in Old Irish: selected studies from a descriptive, historical and comparative point of view. New edition with additional notes and an extended bibliography by Graham R. Isaac.

Ködderitzsch (Rolf) [Ed.], Wigger (Arndt) [Ed.], Zimmer (Stefan) [Ed.]: Akten des Zweiten Deutschen Keltologen-Symposiums: (Bonn, 2. – 4. April 1997).