apparatus criticus

[vir litterarum]

Does anyone know where I can find an exhaustive list of the abbreviations typically found the apparatus critici of classical texts? I've found several short lists but none that are very extensive.

[Didymus]

This list is a good jumping off point, with the added virtue of being available online. Unusual abbreviations are often spelled out in a preface. I've also seen at least one printed list in a German handbook. Are there any particular abbreviations that are troubling you?

[swiftnicholas]

There is a good list in Eleanor Dickey's "Ancient Greek Scholarship." It is not exhaustive, however, and probably not too much longer than the link just posted.