Коточигов, Александр Михайлович, Даниил Владимирович Левицкий, and Ольга Андреевна Носова. 2017. “Sharing Code: A Group of People Must Find Out a Secret Code by Analyzing a Table Available to All. Each Participant Knows His Line in the Table and One Word from the Code. A Participant Is Allowed to Announce to All Others only One of Two Messages — S He Knows the Code or Does Not Know It. The Article Describes an Algorithm Allowing the Construction of the Table, With the Help of Which, After a Few Exchanges of Messages, All Participants Will Recognize the Code”. Computer Tools in Education, no. 5 (October): 5-11. http://cte.eltech.ru/ojs/index.php/kio/article/view/1495.