Henzinger, M. H. (1995). Approximating minimum cuts under insertions. In 22nd International Colloquium on Automata, Languages and Programming (Vol. 944, pp. 280–291). Szeged, Hungary: Springer Nature.https://doi.org/10.1007/3-540-60084-1_81 
LibreCat: https://research-explorer.ista.ac.at/record/11806
DOI: 10.1007/3-540-60084-1_81