MÁTHÉ, Levente, and Ioan GROSU. “FRIEDEL OSCILLATIONS IN A ONE-DIMENSIONAL NON-INTERACTING ELECTRON GAS IN THE PRESENCE OF TWO IMPURITIES”. Studia Universitatis Babeș-Bolyai Physica, vol. 68, no. 1-2, Dec. 2023, pp. 49-56, doi:10.24193/subbphys.2023.05.