http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
design of interpreters, compilers, and editors for augmented transition networks
The planes interpreter and compiler for augmented transition network grammars / Timothy Wilking Finin -- An ATN programming environment / Thomas Christaller -- Compiling augmented transition networks into MacLisp / Joachim Laubsch, Karl Barth -- Towards the elastic ATN implementation / Krzysztof Kochut.