The Ephyra QA System at TREC 2006. - Nico Schlaefer; P. Gieselman; Guido Sautter (TREC, 2006)

A Pattern Learning Approach to Question Answering Within the Ephyra Framework. - Nico Schlaefer; Petra Gieselmann; Thomas Schaaf; Alex Waibel (TSD, 2006)

Semantic Extensions of the Ephyra QA System for TREC 2007. - Nico Schlaefer; Jeongwoo Ko; Justin Betteridge; Manas A. Pathak; Eric Nyberg; Guido Sautter (TREC, 2007)

Automatic Set Expansion for List Question Answering. - Richard C. Wang; Nico Schlaefer; William W. Cohen; Eric Nyberg (EMNLP, 2008)

Building Watson: An Overview of the DeepQA Project. - David A. Ferrucci; Eric W. Brown 001; Jennifer Chu-Carroll; James Fan; David Gondek; Aditya Kalyanpur; Adam Lally; J. William Murdock; Eric Nyberg; John M. Prager; Nico Schlaefer; Christopher A. Welty (AI Mag., 2010)

Statistical source expansion for question answering. - Nico Schlaefer; Jennifer Chu-Carroll; Eric Nyberg; James Fan; Wlodek Zadrozny; David A. Ferrucci (CIKM, 2011)

Statistical Source Expansion for Question Answering. - Nico Schlaefer (2011)

Textual resource acquisition and engineering. - Jennifer Chu-Carroll; James Fan; Nico Schlaefer; Wlodek Zadrozny (IBM J. Res. Dev., 2012)