Pixel based 3D object recognition with bidirectional associative memories. - Ingo Elsen; Karl-Friedrich Kraiss; Dirk Krumbiegel (ICNN, 1997)

Visual Information Retrieval for 3D Product Identification: A Midterm Report. - Ingo Elsen; Karl-Friedrich Kraiss; Dirk Krumbiegel; Peter Walter; Jochen Wickel (Künstliche Intell., 1999)