Fernando Ferreira
Zigzag and fregean arithmetic![Open Access Link](images/OAlink.png)
2018
in: The philosophers and mathematics, Dordrecht : Springer
![Open Access Link](images/OAlink.png)
Amending Frege's Grundgesetze der Arithmetik![Open Access Link](images/OAlink.png)
2005
Synthese 147/1
![Open Access Link](images/OAlink.png)
A substitutional framework for arithmetical validity![Open Access Link](images/OAlink.png)
1998
Grazer Philosophische Studien 56
![Open Access Link](images/OAlink.png)