PRZYTARSKI, Dennis and STACH, Christoph and GRITTI, Clémentine and MITSCHANG, Bernhard. "Query Processing in Blockchain Systems: Current State and Future Challenges". Giuli, Dino and Hudson-Smith, Andrew and García Villalba, Luis Javier. Future Internet. 2022, vol 14, num. 1, p. 1:1–1:31.