1. P. Candelas, M. Lynker and R. Schimmrigk, Calabi-Yau manifolds in weighted P4, University of Texas preprint UTTG-37-89, Institute for Theoretical Physics preprint NSF-ITP-89-164.
2. B.R. Greene and M.R. Plesser, (2,2) and (2,0) superconformal orbifolds, Harvard University preprint HUTMP-89/B241; Duality in Calabi-Yau moduli space, Harvard University preprint HUTP-89/A043.
3. Construction and couplings of mirror manifolds
4. K. Intriligator and C. Vafa, Landau-Ginzburg orbifolds, Harvard University preprint HUTP-89/A054.
5. On Ricci flat 3-fold