M. H. Stone: Linear Transformations in Hilbert Space: III. Operational Methods and Group Theory. In: Proceedings of the National Academy of Sciences. Band16, Nr.2, Februar 1930, ISSN0027-8424, S.172–175, doi:10.1073/pnas.16.2.172 (pnas.org [abgerufen am 9. November 2022]).
pnas.org
M. H. Stone: Linear Transformations in Hilbert Space: III. Operational Methods and Group Theory. In: Proceedings of the National Academy of Sciences. Band16, Nr.2, Februar 1930, ISSN0027-8424, S.172–175, doi:10.1073/pnas.16.2.172 (pnas.org [abgerufen am 9. November 2022]).
zdb-katalog.de
M. H. Stone: Linear Transformations in Hilbert Space: III. Operational Methods and Group Theory. In: Proceedings of the National Academy of Sciences. Band16, Nr.2, Februar 1930, ISSN0027-8424, S.172–175, doi:10.1073/pnas.16.2.172 (pnas.org [abgerufen am 9. November 2022]).