Singular perturbations I spaces and singular perturbations on manifolds without boundary by Frank, Leonid S.

Field theory a modern primer by Ramond, Pierre, 1943-

Singular perturbation methodology in control systems by Naidu, D. S. (Desineni S.) 1940-

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Sensitivity analysis in linear regression by Chatterjee, Samprit 1938-

Perturbation bounds for matris eigenvalues. by Bhatia, Rajendra

Quantum theory of many-variable systems and fields by Sakita, B.

Models of high energy processes by Polkinghorne, J. C. 1930-

Boundary-interior layer interactions in nonlinear singular perturbation theory by Howes, Frederick A. 1948-

Perturbation theory for linear operators by Kato, Tosio 1917-

Gravitational perturbation theory and synchrotron radiation by Breuer, Reinhard A. 1946-