R 136a1 - Superstar or star cluster?
r and s-processes: Chronometers, thermometers and neutron dosimeters
R Aquarii
R Aquilae: Under the Eagle's Wing
R Arae: an interacting eclipsing binary.
R Band Photometry of X-Ray Selected BL Lacertae Objects: 1ES 0229+20, 1ES 0323+02, 1ES 0502+67, 1ES 0647+25, 1ES 0806+52, 1ES 0927+50, 1ES 1028+51, 1ES 1959+65 and 1ES 2344+51
R Canis Majoris - Times of Eclipse Minima
R Centauri, an Interesting Southern Variable
R CMa - a New Pulsating Eclipsing Binary Star
R Coronae
R Coronae Borealis
R Coronae Borealis
R Coronae Borealis
R Coronae Borealis
R Coronae Borealis
R Coronae Borealis in 1977 and 1983 visual minima. II - Spectral observations
R Coronae Borealis in the 1977 and 1983 visual minima. I - Photometry
R Coronae Borealis stars
R Coronae Borealis stars: characteristics of their decline phase
R Coronae Borealis type variables on the Hertzsprung-Russell diagram