IQBAL, Saleem; SARWAR, Farhana; RAZA, Syed Mohsin; REHMAN, Abdul. How Fractional Charge on an Electron in the Momentum Space is Quantized?. American Scientific Research Journal for Engineering, Technology, and Sciences, Jordan, v. 14, n. 2, p. 265–272, 2015. Disponível em: https://www.asrjetsjournal.org/American_Scientific_Journal/article/view/1069. Acesso em: 11 sep. 2025.