@misc{indiciaeb4f867f83e2d,
  title = {General approach to the sign problem: Factorization method with multiple observables},
  author = {Anagnostopoulos, Konstantinos N and Azuma, Takehiro and Nishimura, Jun},
  year = {2011},
  doi = {10.1103/physrevd.83.054504},
  url = {https://www.osti.gov/biblio/21537438},
  note = {Source identifier: 21537438}
}