FitFone: Tracking Home Workout in Pandemic Times. - Denys J. C. Matthies; Thorleif Harder; Franz Bretterbauer; Viktoria Ginter; Horst Hellbrück (PETRA, 2021)

Student-centered Development of an Online Software Tool to Provide Learning Support Feedback: A Design-study Approach. - Gilbert Drzyzga; Thorleif Harder (CHIRA, 2022)

A Three Level Design Study Approach to Develop a Student-Centered Learner Dashboard. - Gilbert Drzyzga; Thorleif Harder (CHIRA (1), 2023)

Participative Development of a Learning Dashboard for Online Students Using Traditional Design Concepts. - Gilbert Drzyzga; Thorleif Harder; Monique Janneck (CHIRA (2), 2023)

Cognitive Effort in Interaction with Software Systems for Self-regulation - An Eye-Tracking Study. - Gilbert Drzyzga; Thorleif Harder; Monique Janneck (HCI (7), 2023)

User-Centered Design and Iterative Refinement: Promoting Student Learning with an Interactive Dashboard. - Gilbert Drzyzga; Thorleif Harder (WEBIST, 2023)

Systematic Integration of Design Prototypes into the LMS Moodle: Methods and Challenges in Practice. - Thorleif Harder; Gilbert Drzyzga; Jan-Marco Bruhns; Anna-Lena Langhans (CHIRA (1), 2024)

Digital Nudging in Online-Learning Environments: Enhancing Self-regulation and Decision Through Usability-Centric Design. - Thorleif Harder; Monique Janneck (HCI (39), 2024)

From Low Fidelity to High Fidelity Prototypes: How to Integrate Two Eye Tracking Studies into an Iterative Design Process for a Better User Experience. - Gilbert Drzyzga; Thorleif Harder (ICSOFT, 2024)

Enhancing the User Interaction of Online Students: Analysis of an Interaction Concept for a Learner Dashboard. - Thorleif Harder; Gilbert Drzyzga (VISIGRAPP (1): GRAPP, HUCAPP, IVAPP, 2024)

Development of a Self-regulation Tool for (Online) Learners: A Collaborative Approach. - Gilbert Drzyzga; Monique Janneck; Thorleif Harder (HCI (32), 2025)