Eisenhauer, F., Perrin, G., Brandner, W., Straubmeier, C., Böhm, A., Baumeister, H., Cassaing, F., Clénet, Y., Dodds-Eden,
K., Eckart, A., Gendron, E., Genzel, R., Gillessen, S., Gräter, A., Gueriau, C., Hamaus, N., Haubois, X., Haug, M., Henning,
T., Hippler, S., Hofmann, R., Hormuth, F., Houairi, K., Kellner, S., Kervella, P., Klein, R., Kolmeder, J., Laun, W., Léna,
P., Lenzen, R., Marteaud, M., Naranjo, V., Neumann, U., Paumard, T., Rabien, S., Ramos, J. R., Reess, J. M., Rohloff, R.-R.,
Rouan, D., Rousset, G., Ruyet, B., Sevin, A., Thiel, M., Ziegleder, J., & Ziegler, D. (2009).
GRAVITY: microarcsecond astrometry and deep interferometric imaging with the VLT. In A., Moorwood (Ed.),
Science with the VLT in the ELT Era (pp. 361-365). New York: Springer.