Any Facts about Newton Polygons

[snoble]

I'm giving a talk in a few days about Newton Polygons for polynomials and I was wondering if anyone knew of a few (short) interesting uses I could discuss or perhaps a text with a chapter on the subject. I have a cool result about irreducibility and of course the basics but it would be nice to have a few smaller facts that I can fill 10 or 20 minutes with.

I'm using them to look at polynomials in the p-adics but I understand that they have some uses in DE's as well although I don't know much about them.

Thanks,
Steven

 

[fresh_42]

This seems promising: https://www.math.ubc.ca/~cass/research/pdf/Newton.pdf