Tagging and automation: challenges and opportunities for academic libraries. - Kai Eckert 001; Christian Hänger; Christof Niemann (Libr. Hi Tech, 2009)

Crowdsourcing the assembly of concept hierarchies. - Kai Eckert 001; Mathias Niepert; Christof Niemann; Cameron Buckner; Colin Allen; Heiner Stuckenschmidt (JCDL, 2010)