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Annals of Discrete Mathematics
In Section 1, we survey the existence theorems for a kernel; in Section 2, we discuss a new conjecture which could constitute a bridge between the kernel problems and the perfect graph conjecture. In fact, we believe that a graph is 'quasi-perfect' if and only if it is perfect.doi:10.1016/s0167-5060(08)71035-5 fatcat:qfkrtrs2rncn7p3mcmmh2bppr4