P. Esposito, S. E. Motta, F. Pintore, L. Zampieri, L. Tomasella: Swift observations of the ultraluminous X-ray source XMMUJ004243.6+412519 in M31. In: Astrophysics. Solar and Stellar Astrophysics. 2012, arxiv:1210.5099.
P. G. Jonker u. a.: THE NATURE OF THE BRIGHT ULX X-2 IN NGC 3921: A Chandra POSITION AND HST CANDIDATE COUNTERPART. In: Astrophysics. Solar and Stellar Astrophysics. 2012, arxiv:1208.4502.
N. A. Webb u. a.: THE ACCRETION DISC, JETS AND ENVIRONMENT OF THE INTERMEDIATE MASS BLACK HOLE CANDIDATE ESO 243-49 HLX-1. In: Astrophysics. Solar and Stellar Astrophysics. 2012, arxiv:1211.0831.
M. D. Caballero-Garcia u. a.: The aperiodic variability of the Ultraluminous X-ray source in NGC 5408. In: Astrophysics. Solar and Stellar Astrophysics. 2012, arxiv:1210.3965.
David Cseh u. a.: BLACK HOLE POWERED NEBULAE AND A CASE STUDY OF THE ULTRALUMINOUS X-RAY SOURCE IC342 X-1. In: Astrophysics. Solar and Stellar Astrophysics. 2012, arxiv:1201.4473.
Hua Feng, Roberto Soria: Evolution of the spectral curvature in the ULX Holmberg II X-1. In: Astrophysics. Solar and Stellar Astrophysics. 2012, arxiv:1202.1102.
F. Grise u. a.: A long-term X-ray monitoring of the ultraluminous X-ray source NGC 5408 X-1 with Swift reveals the presence of dips but no orbital period. In: Astrophysics. Solar and Stellar Astrophysics. 2013, arxiv:1305.1810v1.
J. J. E.Kajava u. a.: Ultraluminous X-ray Sources in the Chandra and XMM-Newton Era. In: Astrophysics. Solar and Stellar Astrophysics. 2011, arxiv:1109.1610.
Joel N. Bregman u. a.: Ultraviolet Spectra of ULX Systems. In: Astrophysics. Solar and Stellar Astrophysics. 2012, arxiv:1205.0424.
Roberto Soria u. a.: The Birth of an Ultra-Luminous X-ray Source in M83. In: Astrophysics. Solar and Stellar Astrophysics. 2012, arxiv:1203.2335.
Jeanette C. G Ladstone u. a.: OPTICAL COUNTERPARTS OF THE NEAREST ULTRALUMINOUS X-RAY SOURCES. In: Astrophysics. Solar and Stellar Astrophysics. 2013, arxiv:1303.1213v1.
C. T. Berghea, R. P. Dudik: Spitzer Observations of MF 16 Nebula and the associated Ultraluminous X-ray Source. In: Astrophysics. Solar and Stellar Astrophysics. 2012, arxiv:1203.4276.
T. P. Roberts u. a.: A VARIABLE ULTRALUMINOUS X-RAY SOURCE IN A GLOBULAR CLUSTER IN NGC 4649. In: Astrophysics. Solar and Stellar Astrophysics. 2012, arxiv:1210.5163.
S. Mineo u. a.: SPATIALLY RESOLVED STAR FORMATION IMAGE AND THE ULX POPULATION IN NGC2207/IC2163. In: Astrophysics. Solar and Stellar Astrophysics. 2013, arxiv:1301.4084.
A. H. Prestwich u. a.: Ultra-Luminous X-Ray Sources in the Most Metal Poor Galaxies. In: Astrophysics. Solar and Stellar Astrophysics. 2013, arxiv:1302.6203v1.
Lian Tao u. a.: CHANDRA AND HST OBSERVATIONS OF THE SUPERSOFT ULX IN NGC 247: CANDIDATE FOR STANDARD DISK EMISSION. In: Astrophysics. Solar and Stellar Astrophysics. 2012, arxiv:1209.1148.
Jeanette C. Gladstone: The sub-classes of ultraluminous X-ray sources. In: Astrophysics. Solar and Stellar Astrophysics. 2013, arxiv:1306.6886v1.
Xu Han u. a.: Confirming the 115.5-day periodicity in the X-ray light curve of ULX NGC 5408 X-1. In: Astrophysics. Solar and Stellar Astrophysics. 2012, arxiv:1209.3883.
M. Heida u. a.: Accurate positions for the ULXs NGC 7319-X4 and NGC 5474-X1 and limiting magnitudes for their optical counterparts. In: Astrophysics. Solar and Stellar Astrophysics. 2012, arxiv:1206.0597.
Aleksei S. Medvedev, Juri Poutanen: Young rotation-powered pulsars as ultra-luminous X-ray sources. In: Astrophysics. Solar and Stellar Astrophysics. 2013, arxiv:1302.6079v1.
Andrew D. Sutton u. a.: The most extreme ultraluminous X-ray sources: evidence for intermediate-mass black holes? In: Astrophysics. Solar and Stellar Astrophysics. 2012, arxiv:1203.4100.
