On the extremals of a subsidiary capillary problem. Paul Concus; Robert Finn — 1984 Journal für die reine und angewandte Mathematik
A Singular Solution of the Capillary Equation. I. Existence. Paul Concus; Robert Finn — 1975 Inventiones mathematicae
A Singular Solution of the Capillary Equation. II. Uniqueness. Paul Concus; Robert Finn — 1975 Inventiones mathematicae