Fast and exact simulation of isotropic Gaussian random fields on $\mathbb{S}^{2}$ and $\mathbb{S}^{2}\times \mathbb{R}$

@misc{cuevas2018fastexactsimulation,
      title={Fast and exact simulation of isotropic Gaussian random fields on $\mathbb{S}^{2}$ and $\mathbb{S}^{2}\times \mathbb{R}$},
      author={Francisco Cuevas and Emilio Porcu and Denis Allard},
      year={2018},
      eprint={1807.04145},
      archivePrefix={arXiv},
      primaryClass={stat.CO},
      url={https://arxiv.org/abs/1807.04145},
}