RZ Leonis
RZ Leonis Minoris, PG 0943+521, and V1159 Orionis: Three Cataclysmic Variables with Similar and Unusual Outburst Behavior
RZ Normae
RZ Ophiuchi - Photometric variations and a detached configuration
RZ Pyxidis - an early-type marginal contact binary
RZ Sagittae - A new SU Ursae Majoris type dwarf nova
RZ Scuti as a double contact binary
RZ Scuti: New five-color observations, solutions, and photometric and spectroscopic rotations
RZ Tauri: An Unstable W Ursae Majoris Binary with a Magnetically Active Component
RZ Tauri: New Light Curves and Analysis
R^2 Dark Matter
R^2-corrections to Chaotic Inflation
R^n gravity and the chameleon
Rømer og refraktionen.
Rømer [Römer, Roemer], Ole [Olaf] Christensen (1644-1710)