A conversational virtual human as autonomous assistant for elderly and cognitively impaired users? Social acceptability and design considerations. - Marcel Kramer; Ramin Yaghoubzadeh; Stefan Kopp; Karola Pitsch (GI-Jahrestagung, 2013)

Virtual Agents as Daily Assistants for Elderly or Cognitively Impaired People - Studies on Acceptance and Interaction Feasibility. - Ramin Yaghoubzadeh; Marcel Kramer; Karola Pitsch; Stefan Kopp (IVA, 2013)