From search session detection to search mission detection.

@inproceedings{hagen-2013-search, author = {Matthias Hagen and Jakob Gomoll and Anna Beyer and Benno Stein}, editor = {Jo\~{a}o Ferreira and Jo\~{a}o Magalh\~{a}es and P\'{a}vel Calado}, title = {{From search session detection to search mission detection}}, booktitle = {{Open research Areas in Information Retrieval, OAIR 2013, Lisbon, Portugal, May 15-17, 2013}}, pages = {85--92}, publisher = {ACM}, year = {2013}, url = {http://dl.acm.org/citation.cfm?id=2491769} }