iHEARu-PLAY: Introducing a game for crowdsourced data collection for affective computing. - Simone Hantke; Florian Eyben; Tobias Appel; Björn W. Schuller (ACII, 2015)

Brightness- and motion-based blink detection for head-mounted eye trackers. - Tobias Appel; Thiago Santini; Enkelejda Kasneci (UbiComp Adjunct, 2016)

Cross-subject workload classification using pupil-related measures. - Tobias Appel; Christian Scharinger; Peter Gerjets; Enkelejda Kasneci (ETRA, 2018)

CBF: circular binary features for robust and real-time pupil center detection. - Wolfgang Fuhl; David Geisler; Thiago Santini; Tobias Appel; Wolfgang Rosenstiel; Enkelejda Kasneci (ETRA, 2018)

Predicting Cognitive Load in an Emergency Simulation Based on Behavioral and Physiological Measures. - Tobias Appel; Natalia Sevcenko; Franz Wortha; Katerina Tsarava; Korbinian Moeller; Manuel Ninaus; Enkelejda Kasneci; Peter Gerjets (ICMI, 2019)

Large-scale Data Collection and Analysis via a Gamified Intelligent Crowdsourcing Platform. - Simone Hantke; Tobias Olenyi; Christoph Hausner; Tobias Appel; Björn W. Schuller (Int. J. Autom. Comput., 2019)

Cross-participant and cross-task classification of cognitive load based on eye tracking - Tobias Appel (2021)

Predicting Decision-Making during an Intelligence Test via Semantic Scanpath Comparisons. - Tobias Appel; Lisa Bardach; Enkelejda Kasneci (ETRA, 2022)

Investigating Cognitive Load for Tasks with Mathematics and Chemistry Context through Eye Tracking. - Tobias Appel; Kevin Kärcher; Hans-Dieter Körner (ETRA, 2023)

Pupil Diameter during Counting Tasks as Potential Baseline for Virtual Reality Experiments. - Philipp Stark; Tobias Appel; Milo J. Olbrich; Enkelejda Kasneci (ETRA, 2023)

Cross-Task and Cross-Participant Classification of Cognitive Load in an Emergency Simulation Game. - Tobias Appel; Peter Gerjets; Stefan Hoffmann; Korbinian Moeller; Manuel Ninaus; Christian Scharinger; Natalia Sevcenko; Franz Wortha; Enkelejda Kasneci (IEEE Trans. Affect. Comput., 2023)

Theory-based approach for assessing cognitive load during time-critical resource-managing human-computer interactions: an eye-tracking study. - Natalia Sevcenko; Tobias Appel; Manuel Ninaus; Korbinian Moeller; Peter Gerjets (J. Multimodal User Interfaces, 2023)

Fluid Intelligence and Mental Effort during Block Programming: What the Eyes Can Tell Us. - Tobias Appel; Luzia Leifheit (ETRA, 2024)