por Winter Meeting On Low Temperature Physics (13 : 1992 : Vista Hermosa, Morelos, Mexico) | Heiras, Jesús L, 1946- [editor] | Akachi, T [editor].
por Winter Meeting on Low Temperature Physics (12th : 1991 : Morelos, México) | Heiras, Jesús L, 1946- [editor] | Sansores, L. E [editor] | Valladares, A. A [editor].