Professor Leon Petrosyan works at St. Petersburg State UniversityProfessor Vladimir Mazalov works at Petrozavodsk State University, Karelia, Russia and St. Petersburg State University.Professor Nikolai A. Zenkevych works at St. Petersburg State University

• - The Effects of R&D in Adaptation Technologies on International Environmental Agreements.- Bertrand’s Analysis of Baccarat.- Controlled Opinion Formation in Multiagent Systems with Constraints on Control Set.- Gradient Descent Learning Matching the Pennies Repeated Game.- Difference Stackelberg Game Theoretic Model of Innovations in Universities as Cournot Oligopoly.- Agent-Based Model of Tax Control under Information Spreading.- A Multistage Bicriteria Production Game with Pollution Control.- Non-Cooperative Foundation of Cooperative Actions: The Generalized Nash Program.- Games of Timing and Random Walks on Interval.- Centrality Analysis of a City Road Network.- A Note on the Equivalence of Foreign Exchange Strategic Market Structures.- Unblockable k-Payoffs for Cooperative Games.- A Cooperative Game of Technology Spillover Under Durable-strategies.- IDP-core Cooperative Solution in Differential Games with Continuous Updating.- Investment in Public Goods with Uncertain Depreciation.