The van der Waals limit for classical systems. I. A variational principle D. J. GatesO. Penrose OriginalPaper Pages: 255 - 276
Projective unitary antiunitary representations of locally compact groups K. R. Parthasarathy OriginalPaper Pages: 305 - 328
On limits of separable potentials and operator extensions M. BreiteneckerH. R. Grümm OriginalPaper Pages: 337 - 348