Moeur WA, Day PK, Liu F-C, Duncan RV. Thermal conductivity measurements and self-organized criticality very close to the superfluid transition in ⁴He. Fiz. Nizk. Temp. [інтернет]. 10, Лютий 1998 [цит. за 11, Листопад 2025];24(2):147-. доступний у: http://80.92.230.95/index.php/fnt/article/view/f24-0147e