The Central Component of Gravitational Lens Q0957+561 The Central Component of Gravitational Lens Q0957+561v. 135984–990Haarsma, Deborah B., Winn, Joshua N., Shapiro, Irwin, and Lehár, Joseph. 2008. "The Central Component of Gravitational Lens Q0957+561." The Astronomical Journal, 135 984–990.More...ID: 55968Type: articleKeywords: SAO