Buitrago, F., Ferreras, I., Kelvin, L. S., Baldry, I. K., Davies, L., Angthopo, J., Khochfar, S., Hopkins, A. M., Driver, S. P., Brough, S., Sabater, J., Conselice, C. J., Liske, J., Holwerda, B. W., Bremer, M. N., Phillipps, S., López-Sánchez, Á. R., & Graham, A. W. (2018). Galaxy and Mass Assembly (GAMA): Accurate number densities and environments of massive ultra-compact galaxies at 0.02 < z < 0.3. Astronomy and Astrophysics, 619, Article A137. https://doi.org/10.1051/0004-6361/201833785