Howes, F. A. (1976). Singular perturbations and differential inequalities. American Mathematical Society.
Citace podle Chicago (17th ed.)Howes, Frederick A. Singular Perturbations and Differential Inequalities. Providence: American Mathematical Society, 1976.
Citace podle MLA (9th ed.)Howes, Frederick A. Singular Perturbations and Differential Inequalities. American Mathematical Society, 1976.
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