threepoint models the third-order aperture statistics, the natural components of the shear three-point correlation function and the covariance of third-order aperture statistics. Third-order weak lensing statistics extract cosmological information in the non-Gaussianity of the cosmic large-scale structure, making them a promising tool for cosmological analyses.
https://ui.adsabs.harvard.edu/abs/2023A%26A...672A..44H and https://ui.adsabs.harvard.edu/abs/2023A%26A...672A.185L