Bialecki, B., & Karageorghis, A. (2004). Legendre Gauss Spectral Collocation for the Helmholtz Equation on a Rectangle. Numerical algorithms, 36(3), 203-227. https://doi.org/10.1023/B:NUMA.0000040056.52424.49
Chicago Style (17th ed.) CitationBialecki, Bernard, and Andreas Karageorghis. "Legendre Gauss Spectral Collocation for the Helmholtz Equation on a Rectangle." Numerical Algorithms 36, no. 3 (2004): 203-227. https://doi.org/10.1023/B:NUMA.0000040056.52424.49.
MLA (9th ed.) CitationBialecki, Bernard, and Andreas Karageorghis. "Legendre Gauss Spectral Collocation for the Helmholtz Equation on a Rectangle." Numerical Algorithms, vol. 36, no. 3, 2004, pp. 203-227, https://doi.org/10.1023/B:NUMA.0000040056.52424.49.
Warning: These citations may not always be 100% accurate.