1. The mass of an asymptotically flat manifold;Bartnik;Comm. Pure. Appl. Math.,1986
2. Comparison of Dirac operators for manifolds with boundary;Bunke;Suppl. Rend. Circ. Mat. Palermo.,1993
3. Uniqueness of stationary, electro-vacuum black holes revisited;Chruściel,1996
4. Positive mass theorems for black holes;Gibbons;Comm. Math. Phys.,1983
5. Elliptic Partial Differential Equations of Second Order;Gilbarg,1977