I have a bunch of meeting minutes, where the filename is the date the meeting took place. I would like to sort by this date.

The dates in my case are of the following form:
01.01.2009.doc
30.12.1999.doc
6.05.2010.doc
..

Some files are also of the following form:
AD 01.01.2009.doc
KT2 05.05.2000.doc
...

How can I do this? Is it even possible?