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 [3] (with T.H. Koornwinder). The convolution structure for Jacobi function expansions. Arkiv för Matematik 11 (1973), 245-262.

 [4] Spherical functions on rank one symmetric spaces and generalizations. Proceedings of symposia in pure mathematics, vol. XXVI, (Amer. Math. Soc. 1973), 339-342.

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 [12] On a fundamental series of representations related to an affine symmetric space. Lecture notes in Mathematics no. 728, (Springer-Verlag 1979), 77-96.

 [13] Non-commutative harmonic analysis. Doctoral dissertation, Faculty of Natural Sciences, University of Copenhagen 1980.

 [14] Discrete series for symmetric spaces. Ann. of Math. 111 (1980), 253-311.

 [15] K-finite joint eigenfuctions of U(g)^K on a non-Riemannian semisimple symmetric space G/H. Lecture notes in Mathematics no. 880, (Springer-Verlag 1981), 91-101.

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 [23] A simple approach to D-modules. Proceedings of the conference "Symmetric Spaces and Representation of Real Lie Groups". Contemporary Math. 145 (1993), 229-235.

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 [b] (with Niels Keiding et al). Report from the committee on Research and education in the applications of mathematics. Proceedings from the conference "Mathematics in Danmark". Danish Mathematical Society, (1981), 321-387.

 [c] (with Charlotte Christensen og Anders P. Ravn) Jordbrugsforskningens data kan genbruges, Ugeskrift for Jordbrug 10 (1989), 147-151.

[d] (with Iver Thysen and Mikkelsen, S.A.). Dina, Strategy and Plans for the periode1995-1999. Dina Notat No. 25, 55 s. 1994.

 [e] Dina 1 September 1993 - 31 August 1994 : Status and Plans. Dina Notat No. 24, 101s., 1994.

 [f] (with Ulla Dindorp). Description of primary data from crop variety evaluation experiments using the SFD-format and examples from the ADDA-partners: Report to the ADDA-group (Draft-version). Dina Notat No. 34, 44pp, 1995.

 [g] (with Ulla Dindorp and Ravn, Anders P.). A Standard Format for Data Exchange-SFD. Proceedings from the 6th International Congress for Computer Technology in Agriculture (ICCTA '96). Wageningen, The Netherlands, June 16-19, 1996, side 368-373.

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 [i] (with Bo Jellesmark Thorsen) Valuation and Optimal Exploitation of a Forest under Price Uncertainty and Catastrophic Risk. Preprint, February 2000.

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  [l] (Editor with Jørgen Søndergaard).  Summary Report "Towards a European Research Area - Do we need a European Research Council?" October 7-8, 2002 in Copenhagen.

  [m] (Editor, as vice-chair of the Expert Group) "The European Research Council - A Cornerstone in the European Research Area. Report from an expert group". Ministry of Science, Technology and Innovation, Copenhagen, December 15 2003.

[n] (Member of the High Level Expert group) “Frontier Research: The European Challenge. High-Level Expert Group Report”. European Commission, February 2005.