\input zb-basic \input zb-ioport \iteman{io-port 06045713} \itemau{Czygrinow, Andrzej; Kamat, Vikram} \itemti{Tight co-degree condition for perfect matchings in 4-graphs.} \itemso{Electron. J. Comb. 19, No. 2, Research Paper P20, 16 p., electronic only (2012).} \itemab Summary: We give a tight minimum co-degree condition for a 4-uniform hypergraph to contain a perfect matching. \itemrv{~} \itemcc{} \itemut{hypergraphs; matchings} \itemli{emis:journals/EJC/ojs/index.php/eljc/article/view/v19i2p20} \end