Skibsted, E. & Derezinski, J. (2008).
Classical scattering at low energies. In
Perspectives in operator algebras and mathematical physics: conference proceedings, Bucharest, august 10-17, 2005 (pp. 51-83). Theta Foundation. Theta series in advanced mathematics
Kock, A. (2007).
Principal bundles, groupoids, and connections. In J. Kubarski, J. Pradines, T. Rybicki & W. Robert (Eds.),
Geometry and topology of manifolds: the mathematical legacy of Charles Ehresmann on the occasion of the hundredth anniversary of his birthday (pp. 185-200). Polish Academy of Sciences. Banach Center publications Vol. 76
Dancer, A., Doran, B., Kirwan, F.
& Swann, A. F. (2016).
Symplectic and Hyperkähler Implosion. In W. Ballmann, C. Blohmann, G. Faltings, P. Teichner & D. Zagier (Eds.),
Arbeitstagung Bonn 2013: In memory of Friedrich Hirzebruch (pp. 81-103). Birkhäuser Verlag. Progress in Mathematics Vol. 319
https://doi.org/10.1007/978-3-319-43648-7_4