Svitlana Iasechko, Mykola K. Haliantych, Vitalii B. Skomorovskyi, Natalyia Khodeeva, Oksana Obryvkina. 2020. “ Theoretical Problems of Contracts With Information”. International Journal of Advanced Science and Technology 29 (04), 8876 -. http://sersc.org/journals/index.php/IJAST/article/view/30646.