Ordinary search engine users carrying out complex search tasks Singer, Georg Norbisrath, Ulrich Lewandowski, Dirk 2013 - ReposIt
Impact of gender and age on performing search tasks online Singer, Georg Norbisrath, Ulrich Lewandowski, Dirk 2012 - ReposIt
Ordinary search engine users assessing difficulty, effort, and outcome for simple and complex search tasks Singer, Georg Norbisrath, Ulrich Lewandowski, Dirk 2012 - ReposIt
Search-logger : analyzing exploratory search tasks Singer, Georg Norbisrath, Ulrich Vainikko, Eero Kikkas, Hannu Lewandowski, Dirk 2011 - ReposIt