Multi-telescope timing of PSR J1518+4904G. H. Janssen, B. W. Stappers, M. Kramer, D. J. Nice, A. Jessner, I. Cognard and M. B. PurverA&A, 490 2 (2008) 753-761DOI: https://doi.org/10.1051/0004-6361:200810076