E-print: https://arxiv.org/abs/1902.01802
E-print: http://arxiv.org/PS_cache/arxiv/pdf/1009/1009.4785v1.pdf
E-print: http://arxiv.org/abs/1205.3598
E-print: http://arxiv.org/abs/1209.6171
E-print: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3207372
E-print: http://arxiv.org/abs/physics/0512090
E-print: http://arxiv.org/abs/1602.02735
E-print: http://arxiv.org/abs/1604.07556
E-print: http://arxiv.org/abs/cond-mat/0105076
E-print: https://doi.org/10.1051/proc/201759056
E-print: http://arxiv.org/abs/cond-mat/0210710
Published in: Physica A: Statistical Mechanics and its Applications - Volume 299, Issues 1–2, 1 October 2001, Pages 60–70