STAMM GMV, FISZDON W. New methods to measure the vortex-line density during the passage of a supercritical second-sound pulse. Fiz. Nizk. Temp. [інтернет]. 10, Травень 1990 [цит. за 20, Червень 2025];16(5):549-51. доступний у: http://80.92.230.95/index.php/fnt/article/view/f16-0549e