Sheldon Brown's shop sells chainrings in pretty much every conceivable size...
http://www.sheldonbrown.com/harris/chainrings.html
They don't seem to sell 52T chainrings in the 95 mm BCD...
Perhaps what Basso used was a 110 mm BCD crankset? That's a standard size for touring cranks and 52/36 chainrings are available in that size from Sheldon Brown.