by Mioduszewski, Amy J, Rupen, Michael P, Hjellming, Robert M, Pooley, Guy G, Waltman, Elizabeth B
Published in The Astrophysical journal (01.06.2001)

by Muno, Michael P, Remillard, Ronald A, Morgan, Edward H, Waltman, Elizabeth B, Dhawan, Vivek, Hjellming, Robert M, Pooley, Guy
Published in The Astrophysical journal (01.08.2001)

by Garcia, Michael R, Callanan, Paul J, McCarthy, John, Eriksen, Kristoffer, Hjellming, Robert M
Published in The Astrophysical journal (10.06.1999)

by Hjellming, Robert M.
Published in The Astrophysical journal (01.02.1966)

by Hjellming, Robert M.
Published in The Astrophysical journal (01.11.1968)

by Homan, Jeroen, Wijnands, Rudy, Rupen, Michael P, Fender, Rob, Hjellming, Robert M, di Salvo, Tiziana, van der Klis, Michiel
Year of Publication 02.09.2003

by Mioduszewski, Amy J, Rupen, Michael P, Hjellming, Robert M, Pooley, Guy G, Waltman, Elizabeth B
Year of Publication 01.02.2001

by Sejnowski, T. J., Hjellming, Robert M.
Published in The Astrophysical journal (01.06.1969)

by CÓRDOVA, FRANCE A., MASON, KEITH O., HJELLMING, ROBERT M.
Published in Publications of the Astronomical Society of the Pacific (01.01.1983)

by Homan, Jeroen, Wijnands, Rudy, Rupen, Michael P, Fender, Rob, Hjellming, Robert M, Tiziana di Salvo, Michiel van der Klis
Published in arXiv.org (02.09.2003)

by Mioduszewski, Amy J, Rupen, Michael P, Hjellming, Robert M, Pooley, Guy G, Waltman, Elizabeth B
Published in arXiv.org (01.02.2001)

by Hjellming, Robert M., Andrews, M. H., Sejnowski, T. J.
Published in The Astrophysical journal (01.08.1969)