Authors:
Testa, V
Corsi, CE
Andreuzzi, G
Iannicola, G
Marconi, G
Piersimoni, AM
Buonanno, R
Citation: V. Testa et al., Horizontal-branch morphology and dense environments. Hubble Space Telescope observations of globular clusters NGC 2298, 5897, 6535, and 6626, ASTRONOM J, 121(2), 2001, pp. 916-934