Pulsation tomography of rapidly oscillating Ap stars - Resolving the third dimension in peculiar pulsating stellar atmospheresT. Ryabchikova, M. Sachkov, O. Kochukhov and D. LyashkoA&A, 473 3 (2007) 907-922DOI: https://doi.org/10.1051/0004-6361:20077230