KARAS, Martin. International Investment Law in the Theory of International Relations. In EDAMBA 2019. International Scientific Conference for Doctoral Students and Post-Doctoral Scholars. EDAMBA 2019 : International Scientific Conference for Doctoral Students and Post-Doctoral Scholars. - Bratislava : Vydavateľstvo EKONÓM, 2020. ISBN 978-80-225-4704-8, pp. 237-242 online.