That seems a bit arbitrary.  There are no reliable sources given for the current cultural references.  The whole point of pop-cultural references is that such things don't need to be spelled out.  It just so happens that the writers of futurama inhabit a more mathematical pop-culture where Mobius dick is as common as a chicken crossing the road.  At any rate, I guess fair enough and it's not like most futurama fans wouldn't already know anyway and i'm sure you have better things to do with your time.  cheers