Rodrygo L. T. Santos Ben He Craig Macdonald Iadh Ounis Integrating Proximity to Subjective Sentences for Blog Opinion Retrieval. 325-336 2009 ECIR http://dx.doi.org/10.1007/978-3-642-00958-7_30 conf/ecir/2009 db/conf/ecir/ecir2009.html#SantosHMO09