%0 Journal Article %T Digital Twin in manufacturing: A categorical literature review and classification %A Kritzinger, Werner %A Karner, Matthias %A Traar, Georg %A Henjes, Jan %A Sihn, Wilfried %A , %J IFAC-PapersOnLine %@ 2405-8963 %D 2018-01-01 %I Elsevier BV %~ DeepDyve