This is a preview of subscription content, log in via an institution to check access.
Rights and permissions
About this article
Cite this article
Riassunti. Lett. Nuovo Cimento 7, A21–A23 (1973). https://doi.org/10.1007/BF02733783
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02733783