https://linkinghub.elsevier.com/retrieve/pii/S1383762121001351
https://www.jstage.jst.go.jp/article/transinf/E101.D/9/E101.D_2017EDP7296/_article
https://www.worldscientific.com/doi/abs/10.1142/S0218126619501135
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=7509441
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=7509440
https://agupubs.onlinelibrary.wiley.com/doi/10.1002/2014RG000475
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6621127