Müller, T. G., Ďurech, J., Ishiguro, M., Mueller, M., Krühler, T., Yang, H., et al. (2017). Hayabusa-2 mission target asteroid 162173 Ryugu (1999 JU3): Searching for the object’s spin-axis orientation. Astronomy & Astrophysics, 599: A103. doi:10.1051/0004-6361/201629134.