HALOGAS observations of NGC 4414: fountains, interaction, and ram pressure W. J. G. de Blok, G. I. G. Józsa, M. Patterson, G. Gentile, G. H. Heald, E. Jütte, P. Kamphuis, R. J. Rand, P. Serra and R. A. M. Walterbos A&A, 566 (2014) A80 Published online: 18 June 2014 DOI: 10.1051/0004-6361/201322517