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Biographical Memoirs
1944 The identity of weak and strong extensions of differential operators . Trans. Am. Math. Soc. 55:132-51.
1947 On the boundary-value problems of the theory of elasticity and Korn's inequality. Ann. Math. 48(2):267-97.
1948 On the perturbation of continuous spectra. Comm. Pure Appl. Math. I:361-406.
With R. Courant. Supersonic Flow and Shock Waves. New York : Interscience.
1953 On the differentiability of the solutions of linear elliptic differential equations. Comm. Pure Appl. Math. VI:299-326.
1954 Symmetric hyperbolic differential equations. Comm. Pure Appl. Math. VII:354-92.