Georgiev, George, and Valentine Penev. "Mathematical Model of Fuzzy Control System for Autonomous Guided Vehicle in 3D Space." Information & Security: An International Journal 12, no. 2 (2003): 195-207.

Penev, Valentine, Tatiana Atanasova, and Ivanka Valova. "Distributed Simulation and Modeling Environment." Information & Security: An International Journal  3 (1999): 161-169.

Koprinkova, Petya, and Valentine Penev. "Dynamical Behavior of Fuzzy Logic Based Velocity Control Autopilot with Respect to Changes in Linguistic Variables Membership Functions Shape." Information & Security: An International Journal  3 (1999): 108-115.

Penev, Valentine. "Fuzzy Controller for Antitank Wire Guided Missile Simulator  with Direct X SDK." Information & Security: An International Journal  3 (1999): 79-90.

Penev, Valentine. "Simulation Modeling in Military Affairs: Status and Perspectives." Information & Security: An International Journal 1, no. 1 (1998): 91-102.

Penev, Valentine, Georgi Georgiev, Petya Koprinkova, and Peter Petrov. Fuzzy guidance controller for air to air missile In HEMUS-96. Plovdiv, Bulgaria, 1996.

Penev, Valentine. Heurestic Decision-Making Training System In EUFIT'94. Vol. 2. Aachen, Germany, 1994.

Penev, Valentine. Heuristic Decision-Making Training System In EUFIT'94. Vol. 2. achen, Germany, 1994.