' … by far the most comprehensive treatment in the literature of spinorial methods in general relativity … I would regard this new work as one whose acquisition should be given top priority by anyone working in either the classical or quantum theories of gravity.' Contemporary Physics
' … not only provides a highly readable account of spinor calculus that is unparalleled in its depth and thoroughness, but also serves as a valuable source of reference for the numerous spinor and spinor-related formulae that arise in space-time physics.' New Scientist