Paršeliūnas, Eimuntas, Boleslovas Krikštaponis, and Petras Petroškevičius. “Final Results of the Development of the National Vertical Second Order Network (Lithuania)”. International Conference “Environmental Engineering” 10 (January 1, 2017). Accessed July 11, 2026. https://conferences.vilniustech.lt/index.php/ENVIRO/article/view/979.