Ostriker, Jeremiah P.; Vishniac, Ethan T. (1986). “Effect of gravitational lenses on the microwave background, and 1146 + 111B,C”. Nature322 (6082): 804. doi:10.1038/322804a0. ISSN0028-0836.
Ostriker, Jeremiah P.; Vishniac, Ethan T. (1986). “Effect of gravitational lenses on the microwave background, and 1146 + 111B,C”. Nature322 (6082): 804. doi:10.1038/322804a0. ISSN0028-0836.