E-print: https://ssrn.com/abstract=3070850
E-print: https://doi.org/10.1051/proc/201759056
E-print: https://arxiv.org/abs/1708.00644
E-print: https://arxiv.org/abs/1707.01457
E-print: https://arxiv.org/abs/1706.04163
E-print: https://arxiv.org/abs/1704.02638
E-print: https://arxiv.org/abs/1702.08029
E-print: https://arxiv.org/abs/1702.03838
E-print: https://arxiv.org/abs/1610.08818
E-print: http://arxiv.org/abs/1609.04620
E-print: http://arxiv.org/abs/1609.02395
E-print: http://ssrn.com/abstract=2777657
E-print: http://arxiv.org/abs/1605.00634
E-print: http://arxiv.org/abs/1604.07556
E-print: http://arxiv.org/abs/1603.04364v1
E-print: http://arxiv.org/abs/1602.03043
E-print: http://arxiv.org/abs/1602.03011v1
E-print: http://arxiv.org/abs/1602.02735