Hermann Klein Max Schüssler Oliver Nelles Physical-Inspired State Space Structure for Nonlinear Gray-Box Modeling. 2609-2614 2024 CoDIT https://doi.org/10.1109/CoDIT62066.2024.10708260 conf/codit/2024 db/conf/codit/codit2024.html#KleinSN24 streams/conf/codit