On a birational classification of bundles and reflexive sheaves on surfaces
On a characterization of an abelian variety in the classification theory of algebraic varieties
On automorphisms of Enriques surfaces.
On blowing down projective spaces in singular varieties.
On Compactification of Schemes.
On congruences of lines in the projective space (Chapter 6 written in collaboration with M. Pedreira)
On cycles and orbits of polynomial mappings
On elementary transformations of ruled surfaces.
On extremal rays of the higher dimensional varieties.
On Families of Birationally Equivalent Varieties.
On minimal models of elliptic threefolds.
On permutable quadratic inversions in plane with two common singular points
On polarized canonical Calabi-Yau threefolds.
On polynomials whose fibres are irreducible with no critical points.
On surfaces with and non-birational bicanonical maps.
On the Adjunction Mapping.
On the adjunction theoretic classification of polarized varieties.
On the birational automorphism groups of algebraic varieties
On the curves through an general point of a smooth surface in IP3.
On the Diophantine equation ... (X, Y) = ... (x, y).