
"Towards an optimal control of the wrapping effect",
to appear in Proceedings SCAN98.

"Rigorously computed orbits of dynamical systems without the wrapping effect"
, Computing, 61 (1998), pp. 4767.

jointly with Z. Kühn,
"Cutting high dimensional cakes",
American Mathematical Monthly, No.2, Vol. 105, 1998,
168169.

"Zonotope Dynamics in Numerical Quality Control",
in Mathematical Visualization, H.C. Hege, K. Polthiers (eds.),
125134, Springer 1998.

"Rigorous error bounds for the initial value problem
based on defect estimations".

"Teaching Elementary Linear Algebra without Determinants".

jointly E. Adams, W. F. Ames, W. Rufeger, H. Spreuer,
"Computational chaos may be due to a single local error",
J. Comput. Phys. 104 (1993), no. 1, pp. 241250.