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<ref name="GLS">{{cite journal |authorlink=Martin Grötschel |first=M. |last=
<ref name="Cunningham">{{cite journal |first=W. H. |last=Cunningham |title=On submodular function minimization |journal=Combinatorica |volume=5 |issue=3 |year=1985 |pages=185–192 |doi=10.1007/BF02579361 }}</ref>
<ref name="IFF">{{cite journal |first=S. |last=Iwata |first2=L. |last2=Fleischer |first3=S. |last3=Fujishige |title=A combinatorial strongly polynomial algorithm for minimizing submodular functions |journal=J. ACM |volume=48 |year=2001 |issue=4 |pages=761–777 |doi=10.1145/502090.502096 }}</ref>
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<ref name="FW">Y. Filmus, J. Ward, A tight combinatorial algorithm for submodular maximization subject to a matroid constraint, Proc. of 53rd FOCS (2012), pp. 659-668.</ref>
<ref name="SF">Z. Svitkina and L. Fleischer, Submodular approximation: Sampling-based algorithms and lower bounds, SIAM Journal on Computing (2011).</ref>
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