very basic question on static reference

[hometown]

class MyJNash{
static bool MyJNash var_;
static bool equillibrium=true;
public:
static bool MyJNash &(){
if(var_==equillibrium)
return var_;
.........} 

I know how to interpret the code but I dont understand that static function with reference used like above...
Could you one more time please give me an explanation on it ???


Thanks so much,

Regards,

FionA