@inbook{+2005+74+109,
url = {https://doi.org/10.4159/9780674040397-003},
title = {3. A More Sophisticated Instrument},
booktitle = {Frege's Logic},
publisher = {Harvard University Press},
address = {Cambridge, MA and London, England},
pages = {74--109},
doi = {doi:10.4159/9780674040397-003},
isbn = {9780674040397},
year = {2005},
lastchecked = {2026-05-01}
}