@techreport {258, title = {Report On Challenge operation and technical support 1}, number = {D4.4}, year = {2013}, month = {October}, type = {Project deliverable}, url = {http://www.bioasq.org/sites/default/files/PublicDocuments/BioASQ_D4.4-Report-On-Challenge-operation-and-technical-support-1_final.pdf}, author = {Georgios Balikas and Ioannis Partalas and Nicolas Baskiotis and Thierry Artieres and Eric Gaussier and Patrick Gallinari} }