The paucity of globular clusters around the field elliptical NGC 7507 J. P. Caso, T. Richtler, L. P. Bassino, R. Salinas, R. R. Lane and A. Romanowsky A&A, 555 (2013) A56 Published online: 28 June 2013 DOI: 10.1051/0004-6361/201321032