Analysis of information sources in references of the Wikipedia article "بستهبندی دیسک نوری" in Persian language version.
...original Jewel Case remained the world standard for the packaging of CDs. Many billions of cases have been produced since 1982, and recently output has even reached as many as eight billion a year
...original Jewel Case remained the world standard for the packaging of CDs. Many billions of cases have been produced since 1982, and recently output has even reached as many as eight billion a year
