E-print: https://arxiv.org/abs/1610.08818
E-print: https://arxiv.org/abs/1912.12354
E-print: https://arxiv.org/abs/1203.6228
E-print: https://arxiv.org/abs/2003.10419
E-print: http://arxiv.org/abs/cond-mat/0402573
E-print: http://arxiv.org/abs/1502.06736!
E-print: https://arxiv.org/abs/1906.05187