A 5.5-year robotic optical monitoring of Q0957+561: Substructure in a non-local cD galaxy
- Shalyapin, V.N.
- Goicoechea, L.J.
- Gil-Merino, R.
Journal:
Astronomy and Astrophysics
ISSN: 0004-6361, 1432-0746
Year of publication: 2012
Volume: 540
Type: Review