Mueller & Oppenheimer (2014) – available via Psychological Science / SAGE (DOI: 10.1177/0956797614524581)

Longcamp et al. (2005) – PubMed or Elsevier (Acta Psychologica)

Smoker et al. (2009) – Human Factors and Ergonomics Society proceedings

Umejima et al. (2021) – Frontiers in Behavioral Neuroscience (open access)

Ito et al. (2020) – HCII conference proceedings (Springer CCIS)