Casper, Bernhard. Besinnung auf das Heilige, 1966: title page (Klaus Hemmerle)

Leben aus der Einheit, 1995: title page (Klaus Hemmerle) dust jacket (died in January, 1994)

German Wikipedia, viewed December 11, 2017 (Klaus Hemmerle; born April 3, 1929, in Freiburg im Breisgau; died January 23, 1994, in Aachen; German Catholic theologian; in 1975 he was made bishop of Aachen)

Info. converted from 678, 2012-10-02 (b. 1929; Dr. theol.; Bp. of Aachen)