AVRAMENKO, A.; DMITRENKO, N.; KovetskayaМ.; KOVETSKAYA, Y. EFFECT OF PERMEABILITY OF PEBLE BED ON HEAT TRANSFER IN THE CORE OF NUCLEAR REACTOR WITH HELIUM COOLANT. Thermophysics and Thermal Power Engineering, v. 39, n. 4, p. 55-60, 13 jul. 2017.