This is a preview of subscription content, log in via an institution to check access.
Rights and permissions
About this article
Cite this article
Seminario Matematico e Fisico di Milano. Seminario Mat. e. Fis. di Milano 32, VI–VIII (1962). https://doi.org/10.1007/BF02925661
Issue Date:
DOI: https://doi.org/10.1007/BF02925661