M. . Beneš, M. . Hála, R. K. MacGregor, and R. . MacGregor Pelikánová, “Unitary Patenting in the EU: A comparative study of population- and R&D-based efficiency indicators and procedural preference”, IER, vol. 12, no. 2, pp. 65–84, Jun. 2026, doi: 10.15678/IER.2026.1202.04.