Figure 1.

The basis functions<a onClick="popup('http://www.boundaryvalueproblems.com/content/2012/1/117/mathml/M11','MathML',630,470);return false;" target="_blank" href="http://www.boundaryvalueproblems.com/content/2012/1/117/mathml/M11">View MathML</a>for<a onClick="popup('http://www.boundaryvalueproblems.com/content/2012/1/117/mathml/M12','MathML',630,470);return false;" target="_blank" href="http://www.boundaryvalueproblems.com/content/2012/1/117/mathml/M12">View MathML</a>with<a onClick="popup('http://www.boundaryvalueproblems.com/content/2012/1/117/mathml/M13','MathML',630,470);return false;" target="_blank" href="http://www.boundaryvalueproblems.com/content/2012/1/117/mathml/M13">View MathML</a>.

Secer et al. Boundary Value Problems 2012 2012:117   doi:10.1186/1687-2770-2012-117
Download authors' original image