U Aquarii
U Aquarii
U Aquarii
U B V Colors of RR Lyrae Stars in Globular Clusters
U B V Photometry of SCO XR-1
U B V R I Photometry of Stellar Structures throughout the Disk of the Barred Galaxy NGC 3367
U boson searches at KLOE
U BV photoelectric photometry of the 1H/2H double mode cepheid CO Aurigae
U Cephei
U Cephei - A mass-transfer event. I
U Cephei - Effects of disk, hot spot, and stream on primary eclipse light curves
U Cephei - Monographie eines Bedeckungsveraenderlichen
U Cephei a Mass-Transfer Event. II. Observations
U Cephei and its outbursts in 1969 and 1974
U Cephei: an anomalous spectrographic result.
U Cephei: an Unusual Development
U Ceti
U Coronae borealis
U Cygni
U Del & EU Del light curve comments : response.