The practice of enterprise modeling 11th IFIP WG 8.1. Working Conference, PoEM 2018, Vienna, Austria, October 31– November 2, 2018 : proceedings - Buchmann, Robert Andrei 1977-; Karagiannis, Dimitris 1956-; Kirikova, Marite ca. 20./21. Jh (Springer, 2018)