TY JOUR TI IMPROVING THE EFFICIENCY OF INFORMATION SYSTEMS SUCH AS ELECTRONIC LIBRARIES KW IMPROVING THE EFFICIENCY OF INFORMATION SYSTEMS SUCH AS ELECTRONIC LIBRARIES JO NATURAL AND MAN-MADE RISKS (PHYSICO-MATHEMATICAL AND APPLIED ASPECTS) AU Samarin, M.A. AU Maksimov, A.V. AU Vostryh, A.V. PY 2024 IS 2023 PB Saint-Petersburg University of State Fire Service of Emercom of Russia