TAIWAN — Reuters is reporting that textbooks citations for the period March 2015 to March 2017 have fallen to less than 10% from more than 50% in the same period in 2016.

The research was conducted by the textbook citation aggregator Tci, which uses a computer model to calculate the amount of books cited for a given period, and which used data from the US National Library of Medicine.

The Tci research showed that in the first three months of 2017, citations to 3,788 textbooks fell from 2,037 to 1,811.

The figure dropped from 1,936 to 1.04, while the number of books published in the three months in the second half of 2017 declined from 1.16 to 1 a.

On the other hand, the number cited in the third quarter of 2017 increased by nearly 40%, to 1 million books.

“While the number is still high compared to previous years, this is still a much lower number compared to other recent years,” said Tci Chairman and CEO Mark Leinberg.

“In a world of constant information and social media, the current citation trends are no longer sustainable,” Leinburg said.

In the US, the average annual rate of citations dropped from 3,834 in 2015 to 1 in 2017.

In 2017, the first quarter of the year, a total of 7,898,000 books were cited, a drop of nearly 30% from the same quarter last year.

The next quarter, when the US has its annual Census Bureau report, the trend of a declining number of textbooks cited will be reflected in the figure.