Towards Multimodal Characterization of Dialogic Moments on Social Group Face-to-Face Interaction. - Ngoc N. T. Doan; Andrius Penkauskas; Ecaterina Grigoriev; Lisa E. Rombout; Paris Mavromoustakos Blom; Maryam Alimardani; Martin Atzmueller (AfCAI, 2019)