Flux density variations at 3.6cm in the massive star-forming region W49A - De Pree, Christopher Gordon; Galván-Madrid, Roberto J.; Goss, William M.; Klessen, Ralf S.; Mac Low, Mordecai-Mark; Peters, Thomas; Wilner, David J.; Bates, J.; Melo, T.; Presler-Marshall, B.; Webb-Forgus, R. (The astrophysical journal. Part 2, Letters, 2018)