“On the Construction of Well-Conditioned Hierarchical Bases for $\mathcal{H}(div)$-Conforming $\mathbb{R}^n$ Simplicial Elements”. Communications in Computational Physics 14, no. 3 (September 5, 2013): 621–638. Accessed December 5, 2025. https://www.global-sci.com/index.php/cicp/article/view/6124.