NorSource The Norwegian HPSG Resource Grammar presented at Språkteknologiske Ressurser ved NTNU Trondheim 10.01.2003.
Parsing with Richer Formalisms HPSG1 by Sibel Ciddi.
Learning-Theoretic Linguistics: Some Examples from Phonology Bruce Hayes Department of Linguistics UCLA.
Parsing with Richer Formalisms HPSG1 by Sibel Ciddi