Julian Barbour's work is in the historical development of ideas about time and motion, the subject of his Absolute or Relative Motion?, Volume 1, The Discovery of Dynamics (now retitled as simply The Discovery of Dynamics and reprinted as a paperback). He has summarized his ideas about the non-existence of time for non-specializts in The End of Time, which has been published in hardback (1999) and paperback (2000) in the UK and hardback (2000) in the USA (with paperback to be published fall 2001). Articles about the main ideas in this book were published in The New Scientist in October 1999 and Discover (December 2000).
Articles on KurzweilAI.net that refer to Barbour, JulianThe End Of Time: A Talk With Julian Barbour By Julian Barbour
What is time, and what is the right language to describe change, in a closed system like the universe, which contains all of its observers? By Lee Smolin