BSS tensor solution

Hi

in your book part 1, you mentioned solving BSS problem by tensorising the mixture Y to the dth-order of size 2R×2×…×2×2R. I remembering reading something about an example implementation of this solution in ttrecipes package, but I could not locate it. Can you please tell me where to find it if ot exists? 

Thank you very much,

Kind Regards 

Manal 