1. Anh, V.N., Moffat, A.: Index compression using 64-bit words. Softw. Pract. Exp. 40(2), 131–147 (2010)
2. Ao, N., et al.: Efficient parallel lists intersection and index compression algorithms using graphics processing units. PVLDB 4(8), 470–481 (2011)
3. Broder, A.Z., Carmel, D., Herscovici, M., Soffer, A., Zien, J.Y.: Efficient query evaluation using a two-level retrieval process. In: Proceedings of CIKM. pp. 426–434 (2003)
4. Büttcher, S., Clarke, C.L.A., Cormack, G.V.: Information Retrieval-Implementing and Evaluating Search Engines. MIT Press, Cambridge (2010)
5. Cambazoglu, B.B., Baeza-Yates, R.A.: Scalability challenges in web search engines. Synth. Lect. Inf. Concepts Retr. Serv. 7, 1–138 (2015)