Figure 7.

Critical value ofaversus the value ofαfor various damping coefficients (<a onClick="popup('http://www.boundaryvalueproblems.com/content/2012/1/135/mathml/M111','MathML',630,470);return false;" target="_blank" href="http://www.boundaryvalueproblems.com/content/2012/1/135/mathml/M111">View MathML</a>).

Dönmez Demir et al. Boundary Value Problems 2012 2012:135   doi:10.1186/1687-2770-2012-135
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