Author / Collaborator : Hansen, Sönke

• An algorithm for Lagrangian subspaces Hansen, Sönke In: Linear algebra and its applications, Vol. 1990, page 155-176

• Das Fundamentalprinzip für Systeme linearer partieller Differentialgleichungen mit konstanten Koeffizienten Hansen, Sönke Paderborn, 1982

• The leading singularity of the scattering kernel for a transparent obstacle Hansen, Sönke In: Mathematische Annalen, Vol. 1987, page 125-139

• Localizable analytically uniform spaces and the fundamental principle Hansen, Sönke In: Transactions of the American Mathematical Society, Vol. 1981, page 235-250

• On the "Fundamental Principle" of L. Ehrenpreis Hansen, Sönke In: Partial differential equations : papers presented at Stefan Banach International Math. Center at the semester "Partial differential equations" held Sept. 11 - Dec. 16, 1978 (Banach Center publications : 10), Vol. 1983, page 185-201

• Propagation of discontinuities in wave fields Hansen, Sönke In: Proceedings on "Model Optimization in Exploration Geophysics" (6th International Seminar, Berlin, February 1988), Vol. 1989, page 31-39

• Singularities of transmission problems Hansen, Sönke In: Mathematische Annalen, Vol. 1984, page 233-253

• Solution of a hyperbolic inverse problem by linearization Hansen, Sönke In: Communications in Partial Differential Equations, Vol. 1991, page 291-309

• Traveltimes in common midpoint sections of anisotropic media Hansen, Sönke In: Soviet Geology and Geophysics, Vol. 1991, page 120-126

• Uniqueness of the Cauchy problem for convolution equations Hansen, Sönke In: Journal für die reine und angewandte Mathematik, Vol. 1980, page 1-15

• Zum Cauchyproblem für Convolutoren Hansen, Sönke Kiel, 1977