Paciorek CJ. Bayesian Smoothing with Gaussian Processes Using Fourier Basis Functions in the spectralGP Package. J. Stat. Soft. [Internet]. 2007 Apr. 10 [cited 2024 May 3];19(2):1-38. Available from: https://www.jstatsoft.org/index.php/jss/article/view/v019i02