What is this norm $ \Vert A \Vert_L$?

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I do not know name of this norm of matrix $A\in M_n(\mathbb{C})$:

$ \Vert A \Vert_L = ‎\dfrac{‎\sum_{i,j=1}^n ‎|a_{ij} |‎ ‎‎}{n} $

Do you know its name and where I can find some information about this norm?

Thank you.