Yang, Tonghai Max Planck Institute for Mathematics, Max Planck Society;
https://doi.org/10.48550/arXiv.1208.0670 (Preprint)
https://dx.doi.org/10.4310/MRL.2013.v20.n2.a12 (Publisher version)
Du, T., & Yang, T. (2013). Quaternions and Kudla's matching principle. Mathematical Research Letters, 20(2), 367-383. doi:10.4310/MRL.2013.v20.n2.a12.