벨트라미 방정식

• Gutlyanskii, Vladimir, Vladimir Ryazanov, Uri Srebro, and Eduard Yakubov. The Beltrami Equation: A Geometric Approach. Springer, 2012.
• Porter, R. Michael, and Hirokazu Shimauchi. “Numerical Solution of the Beltrami Equation via a Purely Linear System.” arXiv:1405.7359 [math], May 27, 2014. http://arxiv.org/abs/1405.7359.