D. Nagel

On the condition number of Vandermonde matrices with pairs of nearly-colliding nodes

Stefan Kunis, Dominik Nagel, Stefan Kunis, 2018, Numerical Algorithms.

On the condition number of Vandermonde matrices with pairs of nearly-colliding nodes

Stefan Kunis, D. Nagel, 2020, Numerical Algorithms.

Multivariate Vandermonde matrices with separated nodes on the unit circle are stable

Stefan Kunis, D. Nagel, Anna Strotmann, 2021, Applied and Computational Harmonic Analysis.

On the smallest singular value of multivariate Vandermonde matrices with clustered nodes pdf

Stefan Kunis, Dominik Nagel, Stefan Kunis, 2019, Linear Algebra and its Applications.