- Fischer, A. E. and J. E. Marsden
General relativity as a dynamical system on the manifold a of Riemannian metrics which cover diffeomorphisms,
Springer Lecture Notes in Physics, 14, (1972), 176-188.
(pdf)
- J. E. Marsden, D. G. Ebin, and A. E. Fischer [1972],
Diffeomorphism groups, hydrodynamics and relativity,
in Proc. of the 13th Biennial Seminar of Canadian Mathematical Congress,
(J. Vanstone, ed.), 135-279.
(pdf)
- Fischer, A. E. and J. E. Marsden [1972],
The Einstein equations of evolution--a geometric approach,
J. of Math. Phys., 13, No. 4, April 1972, 546-568.
(pdf)
- Marsden, J. E. [1972],
Darboux's theorem fails for weak symplectic forms,
Proc. of the Amer. Math. Soc., 3, 590-592.
(pdf)
- Fischer, A. E. and J. E. Marsden
The Einstein evolution equations as a first-order quasi-linear symmetric hyperbolic system I,
Comm. Math. Phys., 28, (1972), 1-38.
(pdf)
