Watrous, John; Aaronson, Scott (). „Closed timelike curves make quantum and classical computing equivalent”. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. 465 (2102): 631. Bibcode:2009RSPSA.465..631A. doi:10.1098/rspa.2008.0350.
Watrous, John; Aaronson, Scott (). „Closed timelike curves make quantum and classical computing equivalent”. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. 465 (2102): 631. Bibcode:2009RSPSA.465..631A. doi:10.1098/rspa.2008.0350.