Kinematics of diffuse ionized gas in the disk halo interface of NGC 891 from Fabry-Pérot observationsP. Kamphuis, R. F. Peletier, R.-J. Dettmar, J. M. van der Hulst, P. C. van der Kruit and R. J. AllenA&A, 468 3 (2007) 951-962DOI: https://doi.org/10.1051/0004-6361:20066989