\input zb-basic \input zb-ioport \iteman{io-port 01019103} \itemau{Fouquet, Jean-Luc; Maire, Fr\'ed\'eric; Rusu, Irena; Thuillier, Henri} \itemti{On transversals in minimal imperfect graphs.} \itemso{Discrete Math. 165-166, 301-312 (1997).} \itemab The authors show that for graphs of diameter at least 7, the strong perfect graph conjecture is equivalent to the conjecture that minimal imperfect graphs admit no small 2-transversals. \itemrv{J.Fiam\v{c}ik (Pre\v{s}ov)} \itemcc{} \itemut{clique; stability; strong perfect graph conjecture; minimal imperfect graphs} \itemli{doi:10.1016/S0012-365X(96)00178-1} \end