Christian Gaß Universität Göttingen Papers On the spacetime structure of infrared divergencies in QED Christian Gaß, Karl-Henning Rehren, Felix Tippner September 21, 2021 open access link Lett. Math. Phys. 112 (2022) 37. Revisiting the Okubo-Marshak argument Christian Gaß, José M. Gracia-Bondía, Jens Mund August 04, 2021 string localized quantum fields open access link doi:10.3390/sym13091645 Renormalization in string-localized field theories: a microlocal analysis Christian Gaß July 27, 2021 string localized quantum fields, microlocal analysis open access link Ann. Henri Poincar\'e (2022)