Nottingham ePrints metadata are freely accessible to all, and freely re-useable by all, under the following conditions: (1) The full name(s) of the author(s) and (2) the full bibliographic reference information for the paper (date, title, and, if published, journal, volume, and pages, if any) must always co-appear prominently with any re-use or redisplay of the metadata, in any medium. The metadata may not be offered for sale without the formal permission of the author and publisher. (Note: Nottingham ePrints is NOT the publisher; it is merely the online archive. Mention of Nottingham ePrints in re-use is appreciated but not mandatory.)