2011

• Hauglid, Jon Olav; Ryeng, Norvald Hegelstad; Nørvåg, Kjetil. (2011) The DASCOSA-DB Grid Database System. Springer
  Academic chapter/article/Conference paper
• Ryeng, Norvald Hegelstad. (2011) Improving Query Processing Performance in Large Distributed Database Management Systems. Doktoravhandlinger ved NTNU (293)
  Doctoral dissertation
• Ryeng, Norvald Hegelstad; Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil. (2011) Efficient Distributed Top-k Query Processing with Caching. Lecture Notes in Computer Science (LNCS)
  Academic article
• Ryeng, Norvald Hegelstad; Hauglid, Jon Olav; Nørvåg, Kjetil. (2011) Site-Autonomous Distributed Semantic Caching. ACM Publications
  Academic chapter/article/Conference paper

2010

• Hauglid, Jon Olav; Ryeng, Norvald Hegelstad; Nørvåg, Kjetil. (2010) DYFRAM: dynamic fragmentation and replica management in distributed database systems. Distributed and parallel databases
  Academic article

2009

• Hauglid, Jon Olav; Nørvåg, Kjetil; Ryeng, Norvald Hegelstad. (2009) Efficient and Robust Database Support for Data-Intensive Applications in Dynamic Environments. IEEE (Institute of Electrical and Electronics Engineers)
  Academic chapter/article/Conference paper

2008

• Ryeng, Norvald Hegelstad; Nørvåg, Kjetil. (2008) Robust Aggregation in Peer-to-Peer Database Systems. Association for Computing Machinery (ACM)
  Academic chapter/article/Conference paper
• Ryeng, Norvald Hegelstad; Nørvåg, Kjetil. (2008) RIPPNET: Efficient Range Indexing in Peer-to-Peer Networks. IEEE conference proceedings
  Academic chapter/article/Conference paper