TY JOUR TI Simulation of a fleet of autonomous cars with a shortage of spare parts KW autonomous vehicles KW maintenance KW simulation modeling KW virtual testing KW multi-factor analysis KW stochastic colored Petri nets JO Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics AU Orlov, S.. AU Yakovleva, A.. PY 2026 IS 2026 PB Astrakhan State Technical University