As far as seminars, you're probably out of luck. This is a super specialized area where a seminar would likely be:
[ul]
[li]Sparsely attended.[/li]
[li]Pretty pricey.[/li]
[/ul]
For books, I'm pretty ancient, so my textbooks are old, but:
Timoshenko, "Theory of Plates and Shells"
Gaylord and Gaylord, "Structural Engineering Handbook" First Edition, Chapter 20.