Muhammad Haneef, Saleh Mohammad, Jehan Akbar, Suneela Arif, Nasrullah Shah, Muhammad Zahir & Hameed Khan. (2020). Invisible Oscillations in the Photodetachment Cross Section of $H^-$ near a Surface.
            <i>Journal of Atomic and Molecular Sciences</i>. <i>4</i> (2).
            105-112.
         doi:10.4208/032912.043012a