Lehtimäki, Juha, Mikael Ollikainen, Vesa Salminen, and Juha Varis. “Comparing and Improving the Performance of Multinational Subcontractors in Metalworking – A Comparative Case Study”. Management and Production Engineering Review 16, no. 2 (June 30, 2025): [nr art. 14], s. 1–13. Accessed September 20, 2026. https://wydawnictwo.pan.pl/index.php/mper/article/view/5639.