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<ref name="MuVaVa">K. Mulmuley, U. V. Vazirani, V. V. Vazirani, ''Matching is as easy as matrix inversion'', Combinatorica 7 (1987), 105-113. [http://dx.doi.org/10.1007/BF02579206 DOI link]. [http://wwwpeople.cseecs.berkeley.edu/~vazirani/pubs/matching.pdf Author link]</ref>
<ref name="Ka">A. V. Karzanov, ''On the maximal matchings of a given weight in complete and complete bipartite graphs'', Kibernetika 1 (1987), 7-11. (English translation in: Cybernetics and Systems Analysis 23 (1987), 8–13). [http://dx.doi.org/10.1007/BF01068796 DOI link]</ref>
