Qian Zhang, Lora Cavuoto. A Pilot Study on the Use of Changes in Facial Features to Assess Physical Workload in Real-Time. In Ravindra S. Goonetilleke, Shuping Xiong, Henrijs Kalkis, Zenija Roja, Waldemar Karwowski, Atsuo Murata, editors, Advances in Physical, Social & Occupational Ergonomics - Proceedings of the AHFE 2021 Virtual Conferences on Physical Ergonomics and Human Factors, Social & Occupational Ergonomics, and Cross-Cultural Decision Making, July 25-29, 2021, USA. Volume 273 of Lecture Notes in Networks and Systems, pages 289-296, Springer, 2021. [doi]