International Laser Safety Conference. Laser Institute of America.
Chicago-čujuhus (17. p.)International Laser Safety Conference. Laser Institute of America.
MLA-čujuhus (9. p.)International Laser Safety Conference. Laser Institute of America.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.