Figure 1 .

Variation of<a onClick="popup('http://www.boundaryvalueproblems.com/content/2013/1/39/mathml/M66','MathML',630,470);return false;" target="_blank" href="http://www.boundaryvalueproblems.com/content/2013/1/39/mathml/M66">View MathML</a>withεfor different values ofSwhen<a onClick="popup('http://www.boundaryvalueproblems.com/content/2013/1/39/mathml/M67','MathML',630,470);return false;" target="_blank" href="http://www.boundaryvalueproblems.com/content/2013/1/39/mathml/M67">View MathML</a>.

Bachok et al. Boundary Value Problems 2013 2013:39   doi:10.1186/1687-2770-2013-39
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