High-mass X-ray binary SXP18.3 undergoes the longest type II outburst ever seen in the Small Magellanic CloudDOI: info:10.1111/j.1365-2966.2008.14048.xv. 392361–366
Schurch, M. P. E., Coe, M. J., Galache, J. L., Corbet, R. H. D., McGowan, K. E., McBride, V. A., Townsend, L. J., Udalski, A., and Haberl, F. 2009. "High-mass X-ray binary SXP18.3 undergoes the longest type II outburst ever seen in the Small Magellanic Cloud." Monthly Notices of the Royal Astronomical Society, 392 361–366. https://doi.org/10.1111/j.1365-2966.2008.14048.x.