If it helps :
and
https://pdfs.semanticscholar.org/5613/bb8bdf74ba277ca026988c1816c0c23135d4.pdf
Original Source I believe is :
https://www.doulos.com/knowhow/sysverilog/SNUG13_random_stability/
If it helps :
and
https://pdfs.semanticscholar.org/5613/bb8bdf74ba277ca026988c1816c0c23135d4.pdf
Original Source I believe is :
https://www.doulos.com/knowhow/sysverilog/SNUG13_random_stability/