TY JOUR TI On the causes of shell deformation in tank car boilers for viscous petroleum products KW tank car KW tank car boiler KW loss of stability KW stability margin coefficient KW excess pressure KW boiler corrosion KW shape deviation JO Bulletin of scientific research results AU Cyganskaya, L.V. AU Beyn, D.G. AU Atamanchuk, N.A. PY 2024 IS 2024 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"