^Kuo، Hong-Shi؛ Hwang, Ing-Shouh؛ Fu, Tsu-Yi؛ Lin, Yu-Chun؛ Chang, Che-Cheng؛ Tsong, Tien T. (7 نوفمبر 2006). "Noble Metal/W(111) Single-Atom Tips and Their Field Electron and Ion Emission Characteristics". Japanese Journal of Applied Physics. ج. 45 ع. 11: 8972–8983. Bibcode:2006JaJAP..45.8972K. DOI:10.1143/JJAP.45.8972.