OK, it looks like there is a security hole in the Joomla Bibtex component that some cheerful group are taking advantage of. I would love to get this fixed, but I simply do not have the time at the moment and have little experience when it comes to security. I assume it is an SQL injection problem, can anyone give me a hint as to how to close the hole?
Sorry for not replying sooner. The site was hacked for a while and I have been very busy. What you want to do is possible, but only by modifying the php code directly. If you wish to try to do this I would be happy to help you.
Unfortunately ISBN is not a standard bibtex field, so I did not include it. I could help you change the code to include it, especially if you are willing to replace another unused field
That is a sensible short term fix for the problem, however it now means that if you try to enter a string which is not mysql safe, i.e. unusual characters ( I cannot remember which) then the data might not get added.
It would probably take a few hours of work, but given you are not a programmer you would have to learn php first. Unfortunately I do not have time at the moment to do this for you as I am writing up my PhD.