Hickson P, Ninkov Z, Huchra JP, Mamon GA. 1984.
In Clusters and Groups of Galaxies, ed. F
Mardirossian, G Giuricin, M Mezzetti, pp. 367-73. Dordrecht: Reidel
White SDM. 1990.
In Dynamics and Interactions of Galaxies, ed. R Weilen, pp. 380-88,
Heidelberg: Springer-Verlag
White SDM. 1992.
In Clusters and Superclusters of Galaxies, NATO Advanced Study
Institute, pp. 1-15.
Whitmore BC. 1992.
In Physics of Nearby Galaxies: Nature or Nurture?,
ed. TX Thuan, C Balkowski, J Tran Thanh Van, 12th Moriond Astrophys.
Meet., pp. 351-66. Giv-sur-Yvette: Ed. Front.