Self-dual metrics in Husain's approach
arXiv:gr-qc/0603133 · doi:10.1088/0264-9381/23/15/010
Abstract
We show that Husain's reduction of the self-dual Einstein equations is equivalent to the Plebański equation. The Bäcklund transformation between these equations is found. Contact symmetries of the Husain-Park equation and corresponding conservation laws are derived.
8 pages