1. Calderbank, D.M.J., Kruglikov, B.: Integrability via geometry: dispersionless differential equations in three and four dimensions. arXiv:1612.02753.
2. Cartan, E.: Sur une classe d’espaces de Weyl. Ann. Sci. École Norm. Sup. (3) 60 (1943), 1–16. DOI 10.24033/asens.901
3. Doubrov, B., Ferapontov, E.V., Kruglikov, B., Novikov, V.: On the integrability in Grassmann geometries: integrable systems associated with fourfolds $Gr(3,5)$. arXiv:1503.02274.
4. Dunajski, M., Ferapontov, E.V., Kruglikov, B.: On the Einstein-Weyl and conformal self-duality equations. J. Math. Phys. 56 (8) (2015), 10pp., 083501. DOI 10.1063/1.4927251
5. Dunajski, M., Gutowski, J., Sabra, W.: Einstein-Weyl spaces and near-horizon geometry. Classical Quantum Gravity 34 (2017), 21pp., 045009. DOI 10.1088/1361-6382/aa5992