![A spectrograph for exoplanet observations calibrated at the centimetre-per-second level]()
A spectrograph for exoplanet observations calibrated at the centimetre-per-second levelWilken, Tobias; Curto, Gaspare Lo; Probst, Rafael A.; Steinmetz, Tilo; Manescau, Antonio; Pasquini, Luca; González Hernández, Jonay I.; Rebolo, Rafael; Hänsch, Theodor W.; Udem, Thomas; Holzwarth, Ronald · Nature · 2012