Figure 1.
The line graph presents two time series, with a solid line representing articles and a dashed line representing citations. The number of articles remains very low until the early 1990s, then increases gradually with fluctuations, reaching a peak above 25 around 2021 before declining slightly. Citations begin to rise in the late 1990s, showing sharp fluctuations with several peaks above 30 in the early and late 2000s, followed by moderate variation and a decline toward 2023.Annual production and average citations per year
Source: Author’s own work