Oshikane, Y. (2007). «Observation of nanostructure by scanning near-field optical microscope with small sphere probe». Sci. Technol. Adv. Mater.(free access|formato= requiere |url= (ayuda))8 (3): 181. Bibcode:2007STAdM...8..181O. doi:10.1016/j.stam.2007.02.013.
Synge, E.H. (1928). «A suggested method for extending the microscopic resolution into the ultramicroscopic region». Phil. Mag.6 (35): 356. doi:10.1080/14786440808564615.
Synge, E.H. (1932). «An application of piezoelectricity to microscopy». Phil. Mag.13 (83): 297. doi:10.1080/14786443209461931.
Lewis, A.; Isaacson, M.; Harootunian, A.; Murray, A. (1984). «Development of a 500 Å spatial resolution light microscope. I. Light is efficiently transmitted through λ/16 diameter apertures». Ultramicroscopy13 (3): 227. doi:10.1016/0304-3991(84)90201-8.
Bao, W.; Melli, M.; Caselli, N.; Riboli, F.; Wiersma, D. S.; Staffaroni, M.; Choo, H.; Ogletree, D. F. et al. (2012). «Mapping Local Charge Recombination Heterogeneity by Multidimensional Nanospectroscopic Imaging». Science338 (6112): 1317-21. Bibcode:2012Sci...338.1317B. PMID23224550. doi:10.1126/science.1227977.Se sugiere usar |número-autores= (ayuda)
Bao, W.; Melli, M.; Caselli, N.; Riboli, F.; Wiersma, D. S.; Staffaroni, M.; Choo, H.; Ogletree, D. F. et al. (2012). «Mapping Local Charge Recombination Heterogeneity by Multidimensional Nanospectroscopic Imaging». Science338 (6112): 1317-21. Bibcode:2012Sci...338.1317B. PMID23224550. doi:10.1126/science.1227977.Se sugiere usar |número-autores= (ayuda)
Bao, W.; Melli, M.; Caselli, N.; Riboli, F.; Wiersma, D. S.; Staffaroni, M.; Choo, H.; Ogletree, D. F. et al. (2012). «Mapping Local Charge Recombination Heterogeneity by Multidimensional Nanospectroscopic Imaging». Science338 (6112): 1317-21. Bibcode:2012Sci...338.1317B. PMID23224550. doi:10.1126/science.1227977.Se sugiere usar |número-autores= (ayuda)
Germany, WITec Wissenschaftliche Instrumente und Technologie GmbH, Ulm,. «SNOM || WITec». www.witec.de(en inglés estadounidense). Consultado el 6 de abril de 2017.