Linked from
The 13 pages that link to Maximum-cardinality matching, each with the reason it gives.
Matching (graph theory)Broader topic: Maximum size is a common optimization goal for matchings.
Undirected graphRelated: Matching selects disjoint pairings from the undirected edges.
Kőnig's theoremBroader topic: Its size is the left-hand quantity in the theorem.
Blossom algorithmRelated: The algorithm computes this optimum even when the graph is not bipartite.