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Birth of step-like contrast structures connected with a cusp catastrophe. (English. Russian original) Zbl 1129.35387
Sb. Math. 195, No. 12, 1727-1746 (2004); translation from Mat. Sb. 195, No. 12, 27-46 (2004).

MSC:
35J60 Nonlinear elliptic equations
34E05 Asymptotic expansions of solutions to ordinary differential equations
35B25 Singular perturbations in context of PDEs
58K35 Catastrophe theory
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