Semantics

Data

• http://amr.isi.edu/a.pdf
• https://github.com/amrisi/amr-guidelines/blob/master/amr.md

Algorithms

• http://www.isi.edu/~chiang/papers/hrg-parsing.pdf
• http://www.cs.cmu.edu/~jmflanig/flanigan+etal.acl2014.pdf
• http://www.informatik.uni-bremen.de/theorie/teach/gratra/2004-1/Skript/hr.pdf

Evaluation

• http://amr.isi.edu/smatch-13.pdf

A few papers that I suspect are strongly related

• http://aclweb.org/anthology//W/W11/W11-2126.pdf
• http://aclweb.org/anthology//P/P02/P02-1042.pdf

This is just a starting point. I'm sure there are more.