Due to technical reasons, the Reading Hall and the Community Space opening from the lobby will be available to readers at the ELTE University Library and Archives on 12 December 2025 (Friday) from 12:00 p.m. The other reading rooms will be temporarily closed during the aforementioned hours, and storage services will also be suspended.
The ELTE University Library and Archives will be closed on 13 December 2025 (Saturday) due to an event. From Monday, we will be open as usual.
tudománymetria
Hirsch-index
The h-index was invented in August 2005 by Jorge E. Hirsch, a physicist at the University of California (San Diego) and it is a simple measure of citation. A researcher’s Hirsch-index is h, if there are h articles that have at least h references to each. Therefore, if a researcher’s h-(Hirsch-) index is 21, then he/she has 21 publications to which at least 21 citations have been made separately.