King, R. R.; Sinton, R. A.; Swanson, R. M. (1989-04-10). "Doped surfaces in one sun, point‐contact solar cells". Applied Physics Letters. 54 (15). AIP Publishing: 1460–1462. Bibcode:1989ApPhL..54.1460K. doi:10.1063/1.101345. ISSN 0003-6951. /wiki/Bibcode_(identifier)