: Lezioni di Analisi Matematica Due by Fusco, Marcellini, and Sbordone, published by Zanichelli.
If you are looking for a specific PDF labeled "77," it is often a reference to a university repository or a student-shared "dispensa" (lecture notes). In many academic circles, page 77 of the Esercizi manual is famous for containing challenging problems on (Lagrange Multipliers) or surface integrals . How to Use These Exercises Effectively
Known for making complex partial differential equations accessible.