I've read more than a few texts on 2-way slabs. Most of them just closely follow code and therefore focus on the direct design method as well as the equivalent frame method (if I recall correctly?). What most texts tend to lack is any info about how to detail the slabs themselves, aside from...
Could be by way of a textbook or paper/thesis on the subject. I have a couple texts but they really only skim the surface of flat plate slabs. I'm really dying to see some good design examples in practice.
From what I've seen it almost feels like flat plate slab design is regressing (at least...