Cooper, Colin Perfect matchings in random r-regular, s-uniform hypergraphs Mathematics Technical Report Random graphs.;Hypergraphs.;Combinatorial probabilities. 1993-01-01
    https://kilthub.cmu.edu/articles/journal_contribution/Perfect_matchings_in_random_r-regular_s-uniform_hypergraphs/6479114
10.1184/R1/6479114.v1