[class.static.mfct]

11 Classes [class]

11.4 Class members [class.mem]

11.4.9 Static members [class.static]

11.4.9.2 Static member functions [class.static.mfct]

1

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[Note 1: 

The rules described in [class.mfct] apply to static member functions.

— end note]

2

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[Note 2: 

A static member function does not have a this pointer ([expr.prim.this]).

A static member function cannot be qualified with const, volatile, or virtual ([dcl.fct]).

— end note]