How to build interpolations functions in finite element method?

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Filippo Maria Denaro

You can find many references searching in internet for B-spline Finite Element method

Muhannad Shallal

you can use Lagrange polynomial

Essaid El Kennassi

You can access to the famous Jian-Ming Jin book's: Finite Element Method in Electromagnetics

Abdeslam El Akkad

Thanks

you can build interpolation functions by using lagrange polynomial

is it possible to give me a reference for these interpolation functions?

The books of Zienkiewicz

any book in numerical analysis