Geschaftsprozessintegration mit SAP / B. Funk, F. Teuteberg, P. Niemeyer, J. Marx Gomez, 2010 r=on-line. - Текст : электронный.
Information Technology in Environmental Engineering : Selected Contributions to the Sixth International Conference on Information Technologies in Environmental Engineering (ITEE2013) / ed. B. Funk [et al.], 2014 r=on-line. - Текст : электронный.