Celebratio Mathematica

F. Hirzebruch: “Sin­gu­lar­it­ies and exot­ic spheres,” pp. 35 in Spe­cial volume in hon­or of the life and math­em­at­ics of Egbert Brieskorn, published as J. Sin­gul. 18. Issue edi­ted by G.-M. Greuel, H. A. Hamm, and L. D. Tráng. World­wide Cen­ter of Math­em­at­ics (Cam­bridge, MA), 2018. Trans­lated from Ger­man ori­gin­al which was giv­en at an Ober­wolfach meet­ing on 1996-07-16 to com­mem­or­ate the 60th birth­day of Egbert Brieskorn. MR 3899532 Zbl 1453.​14001 incollection