Pen + Mid-Air: An Exploration of Mid-Air Gestures to Complement Pen Input on Tablets. - Ilhan Aslan; Ida Buchwald; Philipp Koytek; Elisabeth André (NordiCHI, 2016)

MyBrush: Brushing and Linking with Personal Agency. - Philipp Koytek; Charles Perin; Jo Vermeulen; Elisabeth André; Sheelagh Carpendale (IEEE Trans. Vis. Comput. Graph., 2018)