Submitted preprint. Paper 1: On families of rational curves in the
  Hilbert square of a surface (with an Appendix by Edoardo Sernesi). Authors:
  Flaminio Flamini, Andreas Leopold Knutsen and Gianluca Pacienza. Pages: 1 --
  34. Figures: 1. Paper 2: Partial desingularizations of families of nodal
  curves. Author: Edoardo Sernesi. Pages: 35--37