Ando, Kazutoshi; Fujishige, Satoru Signed ring families and signed posets. (English) Zbl 1467.05102 Optim. Methods Softw. 36, No. 2-3, 262-278 (2021). MSC: 05C22 06A07 06D05 90C27 × Cite Format Result Cite Review PDF Full Text: DOI Link
Ando, Kazutoshi; Fujishige, Satoru; Naitoh, Takeshi Balanced bisubmodular systems and bidirected flows. (English) Zbl 0901.05051 J. Oper. Res. Soc. Japan 40, No. 3, 437-447 (1997). MSC: 05C20 90C35 06D99 × Cite Format Result Cite Review PDF Full Text: DOI