M. O. Katanaev, “Complete separation of variables in the geodesic Hamilton-Jacobi equation”, 61 pp., arXiv: 2305.02222
M. O. Katanaev, “Razdelenie peremennykh v uravnenii Gamiltona–Yakobi dlya geodezicheskikh v dvukh i trekh izmereniyakh”, Teoreticheskaya i matematicheskaya fizika, 2024 (to appear)
M. O. Katanaev, “Complete separation of variables in the geodesic Hamilton-Jacobi equation in four dimensions”, Physica Scripta, 98 (2023), 104001