Colless, M., Burstein, D., Davies, R., McMahan, R., Saglia, R., & Wegner, G. (1999). The peculiar motions of early-type galaxies in two distant regions - V. The Mg-sigma relation, age and metallicity.

Colless, M., D. Burstein, R. Davies, R. McMahan, R. Saglia, and G. Wegner. The Peculiar Motions of Early-type Galaxies in Two Distant Regions - V. The Mg-sigma Relation, Age and Metallicity. 1999.

Colless, M., et al. The Peculiar Motions of Early-type Galaxies in Two Distant Regions - V. The Mg-sigma Relation, Age and Metallicity. 1999.