“About the stability of the spectrograph of the 1-m Yale telescope at Cerro Tololo”., RMxAA, vol. 13, no. 1, pp. 3–7, Jan. 1986, Accessed: Dec. 11, 2025. [Online]. Available: https://astronomia.unam.mx/journals/rmxaa/article/view/1986rmxaa..13....3l