Klüners, J., &; Acciaro, V. (1999). Computing Automorphisms of Abelian Number Fields. Mathematics of Computation, 68(227), 1179–1186.

Hilgert, J., &; Krötz, B. (1999). Representations, Characters, and Spherical Functions Associated to Causal Symmetric Spaces. J. Funct. Anal., 169, 357–390.

Hilgert, J. (1999). Guillemin, V., E. Lerman, S. Sternberg. Symplectic fibration and Multiplicity Diagrams   (Cambridge University Press, 1996). In JBer. DMV (Vol. 101).

Hilgert, J., Neumann , A., &; Ólafsson, G. (1999). A Conjugacy Theorem for Symmetric Spaces. Math. Annalen, 313, 785–791.

Hilgert, J., &; Krötz, B. (1999). Weighted Bergman Spaces Associated to Causal Symmetric Spaces. Manus. Math., 99, 151–180.

Hilgert, J., &; Neeb, K.-H. (1999). Positive Definite Spherical Functions on Olshanskii Domains. Trans. AMS., 352, 1345–1380.

Rösler, M. (1999). An uncertainty principle for Hankel transforms. Proceedings of the American Mathematical Society, 127(1), 183–194.

Dellnitz, M., &; Junge, O. (1998). An adaptive subdivision technique for the approximation of attractors and invariant measures. Computing and Visualization in Science, 63–68.https://doi.org/10.1007/s007910050006 

Rösler, M., &; Voit, M. (1998). Biorthogonal polynomials associated with reflection groups and a formula of Macdonald. Journal of Computational and Applied Mathematics, 99(1–2), 337–351.https://doi.org/10.1016/s0377-0427(98)00168-x 

Rösler, M., &; Voit, M. (1998). Markov Processes Related with Dunkl Operators. Advances in Applied Mathematics, 21(4), 575–643.https://doi.org/10.1006/aama.1998.0609 

Burban, I., &; Duma, W. (1998). Projective transformations of a plane. U Sviti Mathematyky, 4(2).

Burban, I., &; Duma, W. (1998). Projective transformations of a plane and three-dimensional space. U Sviti Mathematyky, 4(4).

Burban, I. (1998). Rational parameterization of algebraic curves. U Sviti Mathematyky, 4(1).

Hilgert, J., &; Neeb, K.-H. (1998). Invariant Cones in Real Representations. In J. Hilgert, J. D. Lawson, K.-H. Neeb, &; E. B. Vinberg (Eds.), Positivity in Lie Theory: Open Problems. De Gruyter.

Hilgert, J., &; Bertram, W. (1998). Reproducing Kernels on Vector Bundles. In H. D. Doebner, V. Dobrev, &; J. Hilgert (Eds.), Lie Theory and its Applications in Physics. World Scientific.

Hilgert, J., &; Bertram, W. (1998). Hardy Spaces and Analytic Continuation of Bergman Spaces. Bull. Math. Soc. Francaise, 126, 435–482.

Hilgert, J., &; Neeb, K.-H. (1998). Poisson Lie Groups and Non-Linear Convexity Theorems. Math. Nachr., 191, 153–187.

Hilgert, J., Doebner, H.-D., &; Dobrev, V. K. (Eds.). (1998). Lie Theory and its Applcations in Physics II. World Scientific.

Hilgert, J., Lawson, J. D., Neeb, K.-H., &; Vinberg, E. B. (Eds.). (1998). Positivity in Lie Theory. De Gruyter, .

Hesse, K. (1998). Wachstumsverhalten von Lösungen der $verline\'70artial$-Gleichung auf Pseudo-Siegel-Gebieten.