https://www.jstage.jst.go.jp/article/transinf/E102.D/2/E102.D_2018EDP7146/_article
https://linkinghub.elsevier.com/retrieve/pii/S231472881730051X
https://linkinghub.elsevier.com/retrieve/pii/S0921889016303888
https://linkinghub.elsevier.com/retrieve/pii/S2352864815000115
https://linkinghub.elsevier.com/retrieve/pii/S0167865514001299