RATAN-600 multi-frequency data for the BL Lacertae objects M. G. Mingaliev, Yu. V. Sotnikova, R. Yu. Udovitskiy, T. V. Mufakharov, E. Nieppola and A. K. Erkenov A&A, 572 (2014) A59 Published online: 27 November 2014 DOI: 10.1051/0004-6361/201424437