Titlebook: Ordinary and Partial Differential Equations; Proceedings of the F William N. Everitt,Brian D. Sleeman Conference proceedings 1976 Springer-

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On limit-point and Dirichlet-type results for second-order differential expressions,

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Nonlinear evolution operators and delay equations,

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On linear partial integro differential equations with a small parameter,

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Integrating a differential equation with a weak continuous vector field,

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J. M. Ballt of research findings. This behavior emerges patterns of using language in academia. For example, recently it has been found that the proportion of positive words has risen in the content of scientific articles over the last 40 years, which probably shows the tendency in scientists to exaggerate an