• case-insensitive prefix search: default
  e.g., sig matches "SIGIR" as well as "signal"
• exact word search: append dollar sign ($) to word
  e.g., graph$ matches "graph", but not "graphics"
• boolean and: separate words by space
  e.g., codd model
• boolean or: connect words by pipe symbol (|)
  e.g., graph|network

Update May 7, 2017: Please note that we had to disable the phrase search operator (.) and the boolean not operator (-) due to technical problems. For the time being, phrase search queries will yield regular prefix search result, and search terms preceded by a minus will be interpreted as regular (positive) search terms.

found one match

• 2013
• 
  Zhidan Liu, Wei Xing, Yongchao Wang, Dongming Lu:
  Hierarchical Spatial Clustering in Multihop Wireless Sensor Networks. Int. J. Distributed Sens. Networks 9 (2013)