David Graham has published the results of his research in a variety of edited volumes and international research journals.
A list of publications (and preprints of many of them) are available via the Loughborough University publications database. The database also links to the final published version of most material (access may require subscription to the journal). If you are unable to access the published articles, please contact me for offprints.
Information on publications and research metrics from ResearcherID: