| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Gemstone of Paradise: The Holy Grail in Wolfram's Parzival | 978-0-19-974759-7 (0-19-974759-8) | 2010 |
| Tree of Salvation: Yggdrasil and the Cross in the North | 978-0-19-994861-1 (0-19-994861-5) | 2013 |
G.M. · G. Murphy · G. Ronald Murphy · G S · M S. · R. M. · R. Murphy · R. S. · Ronald M. · Ronald Murphy · Ronald S.