Celebratio Mathematica

A. S. Schwarz: “Uni­ver­sal mod­uli space and string the­ory,” pp. 450–​456 in Su­per­strings ’89 (Trieste, Italy, 3–14 April 1989). Edi­ted by M. Green, R. Iengo, S. Rand­jbar-Daemi, E. Sez­gin, and A. Strominger. World Sci­entif­ic (Singa­pore), 1990. MR 1159976 Zbl 0985.​81680 incollection

H. La, P. Nel­son, and A. S. Schwarz: “Re­marks on Vi­ra­s­oro mod­el space,” pp. 259–​265 in Strings ’90 (Col­lege Sta­tion, TX, 21–17 March 1990). Edi­ted by R. Arnowitt, R. Bry­an, M. J. Duff, D. V. Nan­o­poulos, C. N. Pope, and E. Sez­gin. World Sci­entif­ic (River Edge, NJ), 1991. MR 1256501 incollection