Celebratio Mathematica

article M. H. Freed­man and R. Skora: “Strange ac­tions of groups on spheres,” J. Dif­fer­en­tial Geom. 25 : 1 (1987), pp. 75–​98. MR 0873456 Zbl 0588.​57024

incollection M. H. Freed­man and R. Skora: “Strange ac­tions of groups on spheres, II,” pp. 41–​57 in Holo­morph­ic func­tions and mod­uli (MSRI, Berke­ley, CA, March 13–19, 1986), vol. II. Edi­ted by D. Dras­in, C. J. Earle, F. W. Gehring, I. Kra, and A. Marden. Math­em­at­ic­al Sci­ences Re­search In­sti­tute Pub­lic­a­tions 11. Spring­er (New York), 1988. MR 0955832 Zbl 0666.​57028