Simm, T., Saglia, R., Salvato, M., Bender, R., Burgett, W. S., Chambers, K. C., et al. (2015). Pan-STARRS1 variability of XMM-COSMOS AGN - I. Impact on photometric redshifts. Astronomy & Astrophysics, 584: A106, pp. 1-22. doi:10.1051/0004-6361/201526859.