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- [2] NUMBER OF CUT VERTICES AND CUT ARCS IN A STRONG DIRECTED GRAPH ACTA MATHEMATICA ACADEMIAE SCIENTIARUM HUNGARICAE, 1972, 22 (3-4): : 411 - &
- [5] On graphs with cut vertices and cut edges Acta Mathematica Sinica, English Series, 2014, 30 : 539 - 546