Bressi, G.; Carugno, G.; Della Valle, F.; Galeazzi, G.; Sartori, G. (2011). "Testing the neutrality of matter by acoustic means in a spherical resonator". Physical Review A. 83 (5) 052101. arXiv:1102.2766. doi:10.1103/PhysRevA.83.052101. S2CID118579475.
Millikan, R. A. (1910). "The isolation of an ion, a precision measurement of its charge, and the correction of Stokes's law". Science. 32 (822): 436–448. doi:10.1126/science.32.822.436.
Fletcher, Harvey (1982). "My work with Millikan on the oil-drop experiment". Physics Today. 35 (6): 43–47. doi:10.1063/1.2915126.
Klein, Martin J. (1 October 1961). "Max Planck and the beginnings of the quantum theory". Archive for History of Exact Sciences. 1 (5): 459–479. doi:10.1007/BF00327765. ISSN1432-0657. S2CID121189755.
Bressi, G.; Carugno, G.; Della Valle, F.; Galeazzi, G.; Sartori, G. (2011). "Testing the neutrality of matter by acoustic means in a spherical resonator". Physical Review A. 83 (5) 052101. arXiv:1102.2766. doi:10.1103/PhysRevA.83.052101. S2CID118579475.
Klein, Martin J. (1 October 1961). "Max Planck and the beginnings of the quantum theory". Archive for History of Exact Sciences. 1 (5): 459–479. doi:10.1007/BF00327765. ISSN1432-0657. S2CID121189755.
Bressi, G.; Carugno, G.; Della Valle, F.; Galeazzi, G.; Sartori, G. (2011). "Testing the neutrality of matter by acoustic means in a spherical resonator". Physical Review A. 83 (5) 052101. arXiv:1102.2766. doi:10.1103/PhysRevA.83.052101. S2CID118579475.
Klein, Martin J. (1 October 1961). "Max Planck and the beginnings of the quantum theory". Archive for History of Exact Sciences. 1 (5): 459–479. doi:10.1007/BF00327765. ISSN1432-0657. S2CID121189755.