MILES extended: Stellar population synthesis models from the optical to the infrared B. Röck, A. Vazdekis, E. Ricciardelli, R. F. Peletier, J. H. Knapen and J. Falcón-Barroso A&A, 589 (2016) A73 Published online: 14 April 2016 DOI: 10.1051/0004-6361/201527570