Hu, E.M.; Cowie, L.L.; Wang, Z. (December 1985). "Long-slit spectroscopy of gas in the cores of X-ray luminous clusters". Astrophysical Journal Supplement Series. 59: 53. Bibcode:1985ApJS...59..447H. doi:10.1086/191081.
Hu, E.M.; Cowie, L.L.; Wang, Z. (December 1985). "Long-slit spectroscopy of gas in the cores of X-ray luminous clusters". Astrophysical Journal Supplement Series. 59: 53. Bibcode:1985ApJS...59..447H. doi:10.1086/191081.