PT Journal AU Heuser, JM Zarins, A Baumane, L Kizane, G Knitter, R TI Radiation stability of long-term annealed bi-phasic advanced ceramic breeder pebbles SO Fusion engineering and design PY 2019 BP 395 EP 399 VL 138 DI 10.1016/j.fusengdes.2018.12.034 LA english ER