Questionable reduced loads with slow rifle powder. Should I be concerned?

[Patrick Chadwick]

It has been pretty well documented that using reduced loads of powders that burn slower than medium rates, such as 3031/4895/etc can cause a condition known as detonation.

I would be very grateful if you could provide a link, book title, or reference to such documentation. I am NOT pooh-poohing the concept of detonation, but up to now all I have is effectively hearsay.