Article ISI
The Astrophysical Journal  (2002)

Around the Clock Observations of the Q0957+561A,B Gravitationally Lensed Quasar

Colley, Wesley N.; Schild, Rudolph E.; Abajas, Cristina; Alcalde, David; Aslan, Zeki; Barrena, Rafael; Dudinov, Vladimir; Khamitov, Irek; Kjernsmo, Kjetil; Lee, Hyun Ju; Lee, Jonghwan; Lee, Myung Gyoon; Licandro, Javier; Maoz, Dan; Mediavilla, Evencio; Motta, Verónica; Muñoz, Jose; Oscoz, Alex; Serra-Ricart, Miquel; Sinelnikov, Igor; Stabell, Rolf; Teuber, Jan; Zheleznyak, Alexander