Title	A Flexible Simulation Environment for Railway Traffic Management Systems
Author	Francesco Flammini and Pasquale di Tommaso
Citation	Vol. 25  No. 10  pp. 141-149
Keywords	ERTMS/ETCS, Safety-Critical Systems, Verification & Validation, Functional Testing, Simulation Environments

Title	The Impact of Inflation and Unemployment Rates on Macroeconomic Model: Statistical Evidence from Sudan
Author	Habib Ahmed Elsayir (Ph.D. Statistics)
Citation	Vol. 25  No. 10  pp. 129-140
Keywords	Inflation Rate Instrumental Variable; Lagged variables; Least Squares Estimators; Unemployment Rates.

Title	Concept of Complex Cryptographic Protection for Telecommunication Networks
Author	Karel Burda
Citation	Vol. 25  No. 10  pp. 126-128
Keywords	cryptographic protection, telecommunication network.

Title	State Regulation and Institutional Support of the Market Turnover of Agricultural Land in Ukraine
Author	Ihor Yurchenko, Tetiana Kolesnyk, Tamara Ivanova, Victor Rudyka, Viktoriia Skrypnyk, Olena Ovcharuk
Citation	Vol. 25  No. 10  pp. 121-125
Keywords	land market, market turnover, state regulation, farming, land value, institutional support, cadastral service