The copyright for any material created by Heather Allen and the authors is reserved. Any duplication or use of objects such as images, diagrams, sounds or texts in other electronic or printed publications is not permitted without Heather Allen's and the authors' agreement.
This website uses etracker technology (www.etracker.com) to collect the following visitor behaviour data:
pages viewed and for how long
search machine used with search phrase if available -
browser used and screen resolution.
This data is collected anonymously to be used by me for optimization purposes. All visitor data is saved using an anonymous user ID that can be be aggregated to a usage profile. I do not know who or where you are. Cookies are NOT downloaded to your computer. The collection and storage of this data may be refused at any time.