- Closed form solution of the triple three-dimensional intersection problem
- Erstellung eines digitalen Höhenmodells (DHM) mit Dreiecks-Bezier-Flächen
- GPS integer ambiguity resolution by various decorrelation methods
- Linearized Least Squares and nonlinear Gauss-Jacobi combinatorial algorithm applied to the 7-parameter datum transformation C7(3) problem
- Polynomial optimization of the 7-parameter datum transformation problem when only three stations in both systems are given