RussGus: 4 hits for Rasmussen, K.

The Bibliographic Database of German Publication on Russia, the Soviet Union and its Successor States (RussGus) contains about 170.000 records from 1974 to 2003 and collects publications of different document types: books, dissertations and other university publications, articles from journals and newspapers including reviews, maps etc. The lists of personal and geographical subjects are located here and here.

Your search for Rasmussen, K. provides 4 hits
1	Knud Rasmussen: Die livländische Krise 1554-1561. (Københavens Universitet Slaviske Institut. Studier 1) Müller, Wolfgang, in: Deutsche Literaturzeitung für Kritik der internationalen Wissenschaft, 1975, 96, S. 405-408 (Rezension)
2	Knud Rasmussen, Niels Erik Rosenfeldt: Introduktion til Studiet Ruslands og Sovjetunionens Historie og Samfundsforhold. (Kobenhavens Universitets Slaviske Institut. Copenhagen University. Institute of Slavonic Studies. Materialer 2) Noack, J.P., in: Osteuropa, 30, 1980, S. 373-374 (Rezension)
3	Svend Age Christensen, Knud Rasmussen: Politikens Russlands historie indtil 1689. Rigets oprindelse (Politikens russische Geschichte bis 1689. Die Errichtung des Reiches) Noack, Johan Peter, in: Osteuropa, 36, 1986, S. 245-246 (Rezension)
4	Russia and the World of the Eighteenth Century. Proceedings of the Third International Conference organized by the Study Group on Eighteenth-Century Russia and held at Indiana University at Bloomington, USA, September 1984. Edited by R.P. Bartlett, A.G. Cross, Karen Rasmussen. Lübke, Christian, in: Jahrbücher für Geschichte Osteuropas, 38, 1990, S. 270-272

The Bibliographic Database of German Publication on Russia, the Soviet Union and its Successor States (RussGus)

Knud Rasmussen: Die livländische Krise 1554-1561. (Københavens Universitet Slaviske Institut. Studier 1)

Knud Rasmussen, Niels Erik Rosenfeldt: Introduktion til Studiet Ruslands og Sovjetunionens Historie og Samfundsforhold. (Kobenhavens Universitets Slaviske Institut. Copenhagen University. Institute of Slavonic Studies. Materialer 2)

Svend Age Christensen, Knud Rasmussen: Politikens Russlands historie indtil 1689. Rigets oprindelse (Politikens russische Geschichte bis 1689. Die Errichtung des Reiches)

Russia and the World of the Eighteenth Century. Proceedings of the Third International Conference organized by the Study Group on Eighteenth-Century Russia and held at Indiana University at Bloomington, USA, September 1984. Edited by R.P. Bartlett, A.G. Cross, Karen Rasmussen.