Group Theoretical Aspects of Gödels Model
J. Hilgert, in: J. Hilgert (Ed.), Jahrbuch Der Gödel Gesellschaft, Wien, 1991.

Infinitesimally Generated Subsemigroups of Motion Groups
J. Hilgert, Rocky Mount. J. Math. 21 (1991) 865–878.

Lie-Gruppen und Lie-Algebren
J. Hilgert, K.-H. Neeb, eds., Lie-Gruppen und Lie-Algebren, Vieweg Verlag, Wiesbaden, 1991.

Onishchik, A.L., und E.B. Vinberg. Lie Groups and Algebraic Groups (Springer, New York, 1990)
J. Hilgert, Zentralblatt 722 (1991).

On optimal linear mean estimators for weakly stationary stochastic processes
M. Rösler, in: Orthogonal Polynomials and Their Applications (Erice, 1990), IMACS Ann. Comput. Appl. Math., 9, 1991, pp. 373–378.

Applications of Lie Semigroups in Analysis
J. Hilgert, in: K.H. Hofmann, et al. (Eds.), The Analytical and Topological Theory of Semigroups, De Gruyter, Berlin, 1990.

On the Causal Structure of Homogeneous Manifolds
J. Hilgert, K.H. Hofmann, Math. Scand. 67 (1990) 119–144.

Computational methods for bifurcation problems with symmetries—with special attention to steady state and Hopf bifurcation points
M. Dellnitz, B. Werner, Journal of Computational and Applied Mathematics (1989) 97–123.

Compactly Embedded Cartan Algebras and Invariant Cones in Lie Algebras
J. Hilgert, K.H. Hofmann, Advances Math. 75 (1989) 168–201.

A Note on Howe's Oscillator Semigroup
J. Hilgert, Ann. Inst. Fourier 39 (1989) 663–688.

Lie Groups, Convex Cones, and Semigroups
J. Hilgert, K.H. Hofmann, J.D. Lawson, eds., Lie Groups, Convex Cones, and Semigroups, Oxford University Press, Oxford, 1989.

Spectrally Ordered Lie Algebras
J. Hilgert, in: H.D. Doebner, et al. (Eds.), Group Theoretical Methods in Physics, Springer, New York, 1988.

Invariant Lorentzian Orders on Simply Connected Lie Groups
J. Hilgert, Arkiv För Mat. 26 (1988) 107–115.

Classification of Invariant Cones in Real Lie Algebras
J. Hilgert, K.H. Hofmann, Bull. AMS 11 (1988) 441–446.

Invariant Cones in Lie Algebras
J. Hilgert, K.H. Hofmann, Semigroup Forum 37l. Semigroup Forum (1988) 241–252.

Maximal Semigroups and the Support of Gauss-Semigroups
J. Hilgert, in: R. Viertl (Ed.), Probability and Baysian Statistics, Plenum Press, New York, 1987.

Maximal Semigroups and Controllability in Products of Lie Groups
J. Hilgert, Archiv Math. 49 (1987) 189–195.

Invariant Cones in Real Lie Algebras
J. Hilgert, K.H. Hofmann, in: R. Nagel, et al. (Eds.), Aspects of Positivity in Functional Analysis, North Holland, 1986.

The Mayer-Vietoris and the Puppe Sequence in K-Theory for C*-algebras
J. Hilgert, Studia Math. 83 (1986) 97–104.

On the Automorphism Group of Cones and Wedges
J. Hilgert, K.H. Hofmann, Geom. Dedicata 21 (1986) 205–217.