@article{TangCHGC06, author = {Thanh Tang and Nick Craswell and David Hawking and Kathleen Griffiths and Helen Christensen}, title = {Quality and Relevance of Domain-specific Search: A Case Study in Mental Health}, journal = {Information Retrieval}, year = {2006}, volume = {9}, number = {2}, pages = {207--225}, note = {\url{https://david-hawking.net/pubs/tang_domainspec.pdf}} }