S. V. Pereverzev et al., “Quantum oscillations between two weakly coupled reservoirs of superfluid He-3,” Nature 388 (1997), pp. 449–451. С популярным обзором этой работы можно ознакомиться в статьях P. McClintock, “Quantum mechanics: Whistles from superfluid helium,” Nature 388 (1997), p. 421, и Michael Brooks, “Liquid genius,” New Scientist 159 (September 5, 1998), pp. 24–28.
