Jan-Henrik Metsch Jonathan Neuhauser Jérôme Jouffroy Taous-Meriem Laleg-Kirati Johann Reger Accelerating Extremum Seeking Convergence by Richardson Extrapolation Methods. 253-259 2022 CDC https://doi.org/10.1109/CDC51059.2022.9992618 conf/cdc/2022 db/conf/cdc/cdc2022.html#MetschNJLR22