TY JOUR TI About Restrictions and Assumptions of Existing Methods for Calculating Sets of Spare Parts of Radio Electronic Equipment KW set of spare parts KW sufficiency indicators KW reliability indicators KW reliability model JO Journal of Technical Research AU Shashurin, V.D. AU Vetrova, N.A. AU Molchanov, A.N. PY 2019 IS 5 PB INFRA-M Academic Publishing LLC.