IAC Gravitational Lenses Monitoring Program: Difference Signals from 2.5 Years of QSO 0957+561 Observations

Goicoechea, L. J., Gil-Merino, R., Serra-Ricart, M., Oscoz, A., Alcalde, D., & Mediavilla, E. (2001). IAC Gravitational Lenses Monitoring Program: Difference Signals from 2.5 Years of QSO 0957+561 Observations. In Highlights of Spanish Astrophysics II (pp. 376–376). Springer Netherlands. https://doi.org/10.1007/978-94-017-1776-2_100