Inside Universidade Estadual de Londrina's largest research partnership: Universidade Estadual de Maringá

Behind Universidade Estadual de Londrina's research output sits a defining relationship: 986 co-authored works with Universidade Estadual de Maringá (Brazil) in the five years to 2025, the university's single largest collaboration.

It anchors an unusually connected research base: 631 collaborating institutions across 63 countries, producing 12,601 joint works over the window, with international co-authors on 15% of output.

The collaborative work travels: its field-weighted citation impact stands at 0.88, where the world average is 1.0.

The Research Collaboration Index, the first global account of how universities actually collaborate, publishes its first full edition on Tuesday 15 September at 09:00 UK.

Every figure derives from the open global research record and is checkable at source.