@article{Alt1989, author = {Alt, Helmut}, title = {Die Bedeutung des Effektivzinses in der Finanzwirtschaft}, series = {Betriebs-Berater : BB : Beil. 14 Finanz-Berater}, journal = {Betriebs-Berater : BB : Beil. 14 Finanz-Berater}, issn = {0340-7926}, pages = {31 -- 32}, year = {1989}, language = {de} } @article{Alt1989, author = {Alt, Helmut}, title = {Einfluß der Kontof{\"u}hrungsmodelle auf den Effektivzins und die Restschuld bei Annuit{\"a}tendarlehen}, series = {Betriebs-Berater : BB : Beil. 14 Finanz-Berater}, journal = {Betriebs-Berater : BB : Beil. 14 Finanz-Berater}, issn = {0340-7926}, pages = {32 -- 37}, year = {1989}, language = {de} } @article{Alt1989, author = {Alt, Helmut}, title = {Steuerreformgesetz 1990}, series = {Elektrizit{\"a}tswirtschaft}, volume = {Bd. 88}, journal = {Elektrizit{\"a}tswirtschaft}, number = {H. 1/2}, issn = {0013-5496}, pages = {78 -- 83}, year = {1989}, language = {de} } @article{Alt1989, author = {Alt, Helmut}, title = {Steuerreformgesetz 1990}, series = {Elektrizit{\"a}tswirtschaft}, volume = {Jg. 88}, journal = {Elektrizit{\"a}tswirtschaft}, number = {H. 2}, issn = {0947-0581 (E-Journal); 0340-7918 (Print)}, pages = {120 -- 121}, year = {1989}, language = {de} } @inproceedings{Baumann1989, author = {Baumann, Marcus}, title = {Primary production and phytoplankton growth in the marginal ice zone of the Fram Strait and the interpretation of the field data with autecological experiments (Abstract)}, series = {Oceanography and biology of Arctic seas : selected papers from the ICES Symposium on Marine Sciences of the Arctic and Subarctic Regions, held in Santander, 28 - 30 September 1987. (Rapports et proc{\`e}s-verbaux des r{\´e}unions / Conseil International pour l'Exploration de la Mer ; 188)}, booktitle = {Oceanography and biology of Arctic seas : selected papers from the ICES Symposium on Marine Sciences of the Arctic and Subarctic Regions, held in Santander, 28 - 30 September 1987. (Rapports et proc{\`e}s-verbaux des r{\´e}unions / Conseil International pour l'Exploration de la Mer ; 188)}, editor = {Hempel, G.}, publisher = {International Council for the Exploration of the Sea}, address = {Copenhagen}, organization = {Symposium on Marine Sciences of the Arctic and Subarctic Regions <1987, Santander>}, pages = {128}, year = {1989}, language = {en} } @incollection{KurbelPietsch1989, author = {Kurbel, Karl and Pietsch, Wolfram}, title = {Projektmanagementebenen bei evolution{\"a}rer Softwareentwicklung}, series = {Interaktive betriebswirtschaftliche Informations- und Steuerungssysteme}, booktitle = {Interaktive betriebswirtschaftliche Informations- und Steuerungssysteme}, editor = {Kurbel, Karl and Mertens, Peter and Scheer, August W.}, publisher = {De Gruyter}, address = {Berlin}, isbn = {3-11-012100-X}, doi = {10.1515/9783110847055-013}, pages = {261 -- 285}, year = {1989}, language = {de} } @article{SaffeLodewiksHaasetal.1989, author = {Saffe, P. and Lodewiks, J. and Haas, H.-J. and Feigel, H.-J. and Ulrich, H. and Mauer, J. and Ortwig, H. and Dahmann, Peter and Rotth{\"a}user, S. and Tao, J. and Ohlischl{\"a}ger, O. and Scholz, D. and Bergmann, M. and Anders, P.}, title = {Neues von ASB Antreiben - Steuern - Bewegen}, series = {{\"O}lhydraulik und Pneumatik. Vol. 33 (1989), H. 7}, journal = {{\"O}lhydraulik und Pneumatik. Vol. 33 (1989), H. 7}, issn = {0341-2660}, pages = {550 -- 572}, year = {1989}, language = {de} } @inproceedings{StaatBallmann1989, author = {Staat, Manfred and Ballmann, J.}, title = {Fundamental aspects of numerical methods for the propagation of multi-dimensional nonlinear waves in solids}, series = {Nonlinear hyperbolic equations : theory, computations methods, and applications ; proceedings of the 2nd International Conference on Nonlinear Hyperbolic Problems, Aachen}, booktitle = {Nonlinear hyperbolic equations : theory, computations methods, and applications ; proceedings of the 2nd International Conference on Nonlinear Hyperbolic Problems, Aachen}, pages = {574 -- 588}, year = {1989}, abstract = {The nonlinear scalar constitutive equations of gases lead to a change in sound speed from point to point as would be found in linear inhomogeneous (and time dependent) media. The nonlinear tensor constitutive equations of solids introduce the additional local effect of solution dependent anisotropy. The speed of a wave passing through a point changes with propagation direction and its rays are inclined to the front. It is an open question whether the widely used operator splitting techniques achieve a dimensional splitting with physically reasonable results for these multi-dimensional problems. May be this is the main reason why the theoretical and numerical investigations of multi-dimensional wave propagation in nonlinear solids are so far behind gas dynamics. We hope to promote the subject a little by a discussion of some fundamental aspects of the solution of the equations of nonlinear elastodynamics. We use methods of characteristics because they only integrate mathematically exact equations which have a direct physical interpretation.}, subject = {Nichtlineare Welle}, language = {en} } @article{LaackRefisch1989, author = {Laack, Walter van and Refisch, A.}, title = {Neuralgic amyotrophy of the lumbar area. Case Report / Refisch, A. ; Laack, W. van}, series = {Archives of Orthopaedic and Trauma Surgery. 108 (1989), H. 5}, journal = {Archives of Orthopaedic and Trauma Surgery. 108 (1989), H. 5}, isbn = {0936-8051}, pages = {329 -- 332}, year = {1989}, language = {en} } @article{LaackCasser1989, author = {Laack, Walter van and Casser, H.-R.}, title = {Arthroskopische Behandlung der Osteochondrosis dissecans an der medialen Femurrolle}, series = {Arthroskopie. 2 (1989), H. 1}, journal = {Arthroskopie. 2 (1989), H. 1}, isbn = {0933-7946}, pages = {16 -- 18}, year = {1989}, language = {de} }