U can touch this: touchifying an IDE. - Benjamin Biegel 001; Julien Hoffmann; Artur Lipinski 001; Stephan Diehl 001 (CHASE, 2014)

Participatory Sensing or Participatory Nonsense?: Mitigating the Effect of Human Error on Data Quality in Citizen Science. - Matthias Budde; Andrea Schankin; Julien Hoffmann; Marcel Danz; Till Riedel; Michael Beigl (Proc. ACM Interact. Mob. Wearable Ubiquitous Technol., 2017)