Figure 2 .

Variation of<a onClick="popup('http://www.boundaryvalueproblems.com/content/2013/1/77/mathml/M135','MathML',630,470);return false;" target="_blank" href="http://www.boundaryvalueproblems.com/content/2013/1/77/mathml/M135">View MathML</a>andson (a) and (b) for<a onClick="popup('http://www.boundaryvalueproblems.com/content/2013/1/77/mathml/M136','MathML',630,470);return false;" target="_blank" href="http://www.boundaryvalueproblems.com/content/2013/1/77/mathml/M136">View MathML</a>,<a onClick="popup('http://www.boundaryvalueproblems.com/content/2013/1/77/mathml/M137','MathML',630,470);return false;" target="_blank" href="http://www.boundaryvalueproblems.com/content/2013/1/77/mathml/M137">View MathML</a>,<a onClick="popup('http://www.boundaryvalueproblems.com/content/2013/1/77/mathml/M128','MathML',630,470);return false;" target="_blank" href="http://www.boundaryvalueproblems.com/content/2013/1/77/mathml/M128">View MathML</a>,<a onClick="popup('http://www.boundaryvalueproblems.com/content/2013/1/77/mathml/M129','MathML',630,470);return false;" target="_blank" href="http://www.boundaryvalueproblems.com/content/2013/1/77/mathml/M129">View MathML</a>,<a onClick="popup('http://www.boundaryvalueproblems.com/content/2013/1/77/mathml/M131','MathML',630,470);return false;" target="_blank" href="http://www.boundaryvalueproblems.com/content/2013/1/77/mathml/M131">View MathML</a>,<a onClick="popup('http://www.boundaryvalueproblems.com/content/2013/1/77/mathml/M141','MathML',630,470);return false;" target="_blank" href="http://www.boundaryvalueproblems.com/content/2013/1/77/mathml/M141">View MathML</a>.

Shaw et al. Boundary Value Problems 2013 2013:77   doi:10.1186/1687-2770-2013-77
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