Loh, E. Y.; Gubernatis, J. E.; Scalettar, R. T.; White, S. R.; Scalapino, D. J.; Sugar, R. L. (1990). "Sign problem in the numerical simulation of many-electron systems". Physical Review B. 41 (13): 9301–9307. Bibcode:1990PhRvB..41.9301L. doi:10.1103/PhysRevB.41.9301. PMID9993272.
Loh, E. Y.; Gubernatis, J. E.; Scalettar, R. T.; White, S. R.; Scalapino, D. J.; Sugar, R. L. (1990). "Sign problem in the numerical simulation of many-electron systems". Physical Review B. 41 (13): 9301–9307. Bibcode:1990PhRvB..41.9301L. doi:10.1103/PhysRevB.41.9301. PMID9993272.
Loh, E. Y.; Gubernatis, J. E.; Scalettar, R. T.; White, S. R.; Scalapino, D. J.; Sugar, R. L. (1990). "Sign problem in the numerical simulation of many-electron systems". Physical Review B. 41 (13): 9301–9307. Bibcode:1990PhRvB..41.9301L. doi:10.1103/PhysRevB.41.9301. PMID9993272.