Copy protection marks on a transparent layer of an optical disk indicating that the disk has been previously accessed
B. Vasić, "Copy protection marks on a transparent layer of an optical disk indicating that the disk has been previously accessed," Aug. 2000.
Citation
@misc{V_00_USPAT,
author = {Vasić, B. },
howpublished = {US Patent 6,104,686},
month = {Aug.},
title = {{C}opy protection marks on a transparent layer of an optical disk indicating that the disk has been previously accessed},
year = {2000},
}