%0 Journal Article %A Williams, David %T The Q-matrix problem 3 : the Lévy-kernel problem for chains %J Séminaire de probabilités de Strasbourg %D 1978 %P 310-331 %V 12 %I Springer - Lecture Notes in Mathematics %U http://www.numdam.org/item/SPS_1978__12__310_0/ %G fr %F SPS_1978__12__310_0