The Bell System Technical Journal > 1929 > 8 > 1 > 214 - 216
Source
Identifiers
journal ISSN : | 0005-8580 |
DOI | 10.1002/j.1538-7305.1929.tb02316.x |
The Bell System Technical Journal > 1929 > 8 > 1 > 214 - 216
journal ISSN : | 0005-8580 |
DOI | 10.1002/j.1538-7305.1929.tb02316.x |