“Grades of Openness. Open and Closed Articles in Norway” (August 2018)…
Based on the total scholarly article output of Norway, we investigated the coverage and degree of openness according to three bibliographic services: 1) Google Scholar, 2) oaDOI by Impact Story [now called Impactstory], and 3) 1findr [formerly oaFindr]. According to Google Scholar, we find that more than 70% of all Norwegian articles are openly available. However, degrees are profoundly lower according to oaDOI and 1findr, respectively 31% and 52%.
open shares vary considerably by discipline, with … the Humanities at the lower end