The rationality of the moduli space of Enriques surfaces Shigeyuki Kondō — 1994 Compositio Mathematica
On the Albanese variety of the moduli space of polarized K3 surfaces. Shigeyuki Kondo — 1988 Inventiones mathematicae
On the Kodaira dimension of the moduli space of K3 surfaces Shigeyuki Kondō — 1993 Compositio Mathematica