Alan Charlesworth has been active in e-commerce since 1996. He is a senior lecturer in e-marketing at a UK university - see an article about his work there here [note: opens a new browser page] - and writes books on the subject, they are:

Book Title: Internet Marketing : a Practical Approach
Author: Alan Charlesworth
Publisher: Butterworth Heinemann
Date published: February 2009
ISBN: 0750686847  

Book Title: The Digital Revolution
Author: Alan Charlesworth
Publisher: Dorling Kindersley
Date published: summer 2009
ISBN: 9781405335478  

Book Title: Online Marketing – a Customer-Led Approach
Author: Richard Gay, Alan Charlesworth & Rita Esen
Publisher: Oxford University Press
Date published: 2007
ISBN: 9780199265855  

Book Title: Choosing the Right Domain Name
Author: Alan Charlesworth
Publisher: Lulu
Date published: 2009
ISBN: 9781445205380  

Book Title: A Glossary of Internet Terms, Phrases and Concepts
Author: Alan Charlesworth
Publisher: Lulu
Date published: 2009
ISBN: 9781445215846  

Book Title: Key Concepts in e-Commerce
Author: Alan Charlesworth
Publisher: Palgrave
Date published: 2007
ISBN: 9780230516717

His website can be found on Alan Charlesworth.eu