Sanna, A. Max Planck Institute for Radio Astronomy, Max Planck Society;
Goedhart, S., van Rooyen, R., van der Walt, D., Maswanganye, J., Sanna, A., MacLeod, G., et al. (2019). Periodic variability of the mainline hydroxyl masers in G9.62+0.20E. mnras, 485(4), 4676-4685. doi:10.1093/mnras/stz767.