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Biographical Memoirs V.67 (1995)
National Academy of Sciences (NAS)

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145
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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.

1955 Asymptotic phenomena in mathematical physics. Bull. Am. Math. Soc. 61(6):485-504.

1958 Symmetric positive linear differential equations. Comm. Pure Appl. Math. XI:333-418.

1981 Unobserved observables and unobserved causality. Comm. Pure Appl. Math. XXXIV:273-83.

1986 Kurt Otto Friedrichs, Selecta, vols. I and II , ed. C. S. Morawetz . Boston : Birkhauser.

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145