1-3 of 3 Books

17 lectures on Fermat numbers
By M Křížek,Michal Krizek,Florian Luca,Lawrence Somer

Forms of Fermat equations and their zeta functions
By Lars Brünjes
Chabauty methods and covering techniques applied to generalized Fermat equations (CWI Tract, 133)
Chabauty methods and covering techniques applied to generalized Fermat equations (CWI Tract, 133)
By N.R. Bruin