Copyrights are initially measured at cost. After initial recognition, copyrights are measured at cost less any accumulated amortisation and any accumulated impairment losses. They have been fully amortised to the profit and loss account in proportion to the expected commercial sales of the literature covered by the assignment of copyright dated 1 September 2014 as follows:
On contract signature with publisher: 40%
After one year - between signature and one year: 30%
After two years - between one and two years: 20%
After three years - between two and three years: 10%