McClintock, Peter V. E. (1979) Condensed state helium. Nature, 278 (5702). p. 378.
Full text not available from this repository.Abstract
The helium atom probably comes closer than anu other to the miniature "billiard ball" of classical kinetic theory. One might expect, therefore, that the properties of liquid and solid helium would be exceptionally simple and even perhaps, rather dull. The reality is far otherwise, thanks mainly to the profound influence of quantum statistics on a collection of these small, rigid spheres. It plays a quite unparalleled influence on a variety of physical phenomena some of which, such as bulk superfluidity are unique on earth (although they may, perhaps, also manifest themselves within the nucleonic fluids In the interiors of dense stars).