Pre-peak ram pressure stripping in the Virgo cluster spiral galaxy NGC 4501 B. Vollmer, M. Soida, A. Chung, J. H. van Gorkom, K. Otmianowska-Mazur, R. Beck, M. Urbanik and J. D. P. Kenney A&A, 483 1 (2008) 89-106 Published online: 04 February 2008 DOI: 10.1051/0004-6361:20078139