MVM 2021 - Volume 47 - Number 3 ENVIRONMENTAL PROBLEMS AND THEIR SOLUTION DURING CONSTRUCTION AND OPERATION OF ST. PETERSBURG BARRIER FLOOD PROTECTION Victor I. Popov, Lev M. Monosov, Igor V. Polischuk Mobility and Vehicle Mechanics, vol. 47, no. 3, 1-8, 2021. OPTIMIZATION OF ZINC-BASED HYBRID NANOCOMPOSITES USING TAGUCHI GREY RELATION ANALYSIS Onur Güler, Sandra Gajević, Slavica Miladinović, Hamdullah Çuvalcı, Blaža Stojanović Mobility and Vehicle Mechanics, vol. 47, no. 3, pp. 9-22, 2021. STATIONARY TEST PLAN OPTIMISATION USING SLOW DYNAMIC SLOPE ENGINE SCREENING Predrag Mrđa, Nenad Miljić, Slobodan Popović, Marko Kitanović Mobility and Vehicle Mechanics, vol. 47, no. 3, pp. 23-34, 2021. HYBRID POWER TRAINS FOR HIGH-SPEED TRACKED VEHICLES Luka Ponorac, Aleksandar Grkić, Slavko Muždeka Mobility and Vehicle Mechanics, vol. 47, no. 3, pp. 35-48, 2021. THE EFFECT OF CORROSION ON A STRUCTURAL INTEGRITY AND VEHICLE SAFETY Valentina Golubović-Bugarski, Snežana Petković, Gordana Globočki-Lakić Mobility and Vehicle Mechanics, vol. 47, no. 3, pp. 49- 62, 2021.