Rank two vector bundles over regular elliptic surfaces. Robert Friedman — 1989 Inventiones mathematicae
Smoothing Cusp Singularities of Small Length. Rick Miranda; Robert Friedman — 1983 Mathematische Annalen
The Generic Torelli Theorem for the Prym Map. Robert Friedman; Roy Smith — 1982 Inventiones mathematicae
On complex surfaces diffeomorphic to rational surfaces. Zhenbo Qin; Robert Friedman — 1995 Inventiones mathematicae
Smoothings of cusp singularities via triangle singularities Robert Friedman; Henry Pinkham — 1984 Compositio Mathematica