Beller, A..
Coding the Universe / - 1st ed / - Cambridge CB2 1RP : University Of Cambridge , 1980 - p.122 :
0-521-28048-0
Set Theory
B:g / M2
Coding the Universe / - 1st ed / - Cambridge CB2 1RP : University Of Cambridge , 1980 - p.122 :
0-521-28048-0
Set Theory
B:g / M2