A Variational Formulation for LTI-Systems and Model Reduction. - Moritz Feuerle; Karsten Urban (ENUMATH, 2019)

An Ultraweak Variational Method for Parameterized Linear Differential-Algebraic Equations. - Emil Beurer; Moritz Feuerle; Niklas Reich; Karsten Urban (Frontiers Appl. Math. Stat., 2022)

A unified framework for the analysis, numerical approximation and model reduction of linear operator equations, Part I: Well-posedness in space and time. - Moritz Feuerle; Richard Löscher; Olaf Steinbach; Karsten Urban (CoRR, 2025)