Introduction 1. Equivalences of deformation theories 2. The Betti and de Rham deformation theories and their moduli spaces 3. The Dolbeault groupoid 4. Equivalence of de Rham and Dolbeault groupoids 5. Hyperkähler geometry on the moduli space 6. The twistor space 7. The moduli space and the Riemann period matrix
Notes
"May 2008, volume 193, number 904 (fourth of 5 numbers)."