Variable optical/infrared counterpart to the transient gamma-ray source J0109+6134E. Fernández-Valenzuela, J. Martí, P. L. Luque-Escamilla, A. J. Muñoz-Arjonilla and J. M. ParedesA&A, 561 (2014) A78DOI: https://doi.org/10.1051/0004-6361/201322378
